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Secondary Pharmaceutical Standards

Our Secondary Pharmaceutical Standards are certified under double accreditation to ISO/IEC 17025 and ISO Guide 34 and are multi-traceable to reference standards from various Pharmacopeial organizations such as USP, PhEUR, and BP. These standards are produced and certified by Sigma-Aldrich RTC.
The ISO Guide 31 compliant Certificate of Analysis includes complete certification details and an independent certified purity value, allowing use of the standard by ISO/IEC 17025 accredited laboratories.
View more information on secondary pharma standards, including an example certificate at: sigma-aldrich.com/pharmastandards

Certificates of Analysis for Secondary Pharmaceutical Standards can be downloaded from the related product webpage.

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PHR1823   16alpha,17-[butylidenebis(oxy)]-21-hydroxypregna-1,4-diene-3,11,20-trione (Budesonide Related Compound L) Pharmaceutical Secondary Standard; Certified Reference Material New
PHR1256   Abacavir sulfate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1253 Acarbose Pharmaceutical Secondary Standard; Certified Reference Material
PHR1266 Acesulfame K Pharmaceutical Secondary Standard; Certified Reference Material
PHR1531 2-Acetamidophenol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1005 Acetaminophen Pharmaceutical Secondary Standard; Certified Reference Material
PHR1530 Acetanilide (Acetaminophen Related Compound D) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1086 Acetanilide melting point standard Pharmaceutical Secondary Standard; Certified Reference Material
PHR1219 Acetone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1551 Acetonitrile Pharmaceutical Secondary Standard; Certified Reference Material
PHR1612   4′-Acetoxyacetanilide (Acetaminophen Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1546 Acetylcholine chloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1523 Acitretin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1254 Acyclovir Pharmaceutical Secondary Standard; Certified Reference Material
PHR1388 Adapalene Pharmaceutical Secondary Standard; Certified Reference Material
PHR1383 Adenine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1138 Adenosine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1110 L-Alanine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1281 Albendazole Pharmaceutical Secondary Standard; Certified Reference Material
PHR1053 Albuterol sulfate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1373 Alcohol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1599 Alendronate Sodium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1638 Alfuzosin hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1364 Allantoin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1377 Allopurinol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1692   alpha-[(Aminocarbonyl)amino]-alpha-phenylbenzeneacetic acid(Phenytoin Related Compound B) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1031 Alpha Tocopherol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1654   Amikacin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1747 4′-Aminoacetophenone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1743 3-Aminobenzoic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1501 Aminobutanol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1224 Aminocaproic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1192 4-Amino-6-chloro-1,3-benzenedisulfonamide; (Benzothiadiazine Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1507 2-Amino-5-Chlorobenzophenone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1225 3-Aminophenol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1148 4-Aminophenol (Acetaminophen Related Compound K) (Paracetamol Impurity K) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1745 4-Aminophenol hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1739 2-Aminophenol (Mesalazine Impurity C - PhEur) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1339 3-Amino-1-propanol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1746 4-Aminosalicylic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1824 (R)-2-Amino-4,5,6,7-tetrahydro-6-(propylamino)benzothiazole dihydrochloride (Pramipexole Related Compound D) Pharmaceutical Secondary Standard; Certified Reference Material New
PHR1164 Amiodarone hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1384 Amitriptyline hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1185 Amlodipine besylate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1327 Ammonium chloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1689 Ammonium Glycyrrhizate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1127 Amoxicillin trihydrate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1662   Amphotericin B Pharmaceutical Secondary Standard; Certified Reference Material
PHR1424 Ampicillin Sodium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1393 Ampicillin Trihydrate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1386   Amylmetacresol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1783   Anastrozole Pharmaceutical Secondary Standard; Certified Reference Material
PHR1212 Anisole Pharmaceutical Secondary Standard; Certified Reference Material
PHR1677 Anthralin (Dithranol) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1489 L-Arabinitol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1106 L-Arginine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1454 Arginine Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1784   Aripiprazole Pharmaceutical Secondary Standard; Certified Reference Material
PHR1008 Ascorbic Acid
PHR1433 Ascorbyl Glucoside Pharmaceutical Secondary Standard; Certified Reference Material
PHR1455 Ascorbyl Palmitate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1381 Aspartame Pharmaceutical Secondary Standard; Certified Reference Material
PHR1104 L-Aspartic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1003 Aspirin (Acetyl Salicylic Acid) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1679 Atomexine Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1422 Atorvastatin Calcium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1591 Atovaquone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1379 Atropine Sulfate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1073 Avobenzone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1672   2,2′-(Azanediyl)bis[N-(2,6-dimethylphenyl)acetamide] (Lidocaine Related Compound E)
PHR1282 Azathioprine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1636 Azelastine Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1088 Azithromycin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1785 Aztreonam Pharmaceutical Secondary Standard; Certified Reference Material
PHR1590 Bacitracin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1559 Bacitracin Zinc Pharmaceutical Secondary Standard; Certified Reference Material
PHR1682 Baclofen Pharmaceutical Secondary Standard; Certified Reference Material
PHR1619 Beclomethasone Dipropionate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1203 Benzaldehyde Pharmaceutical Secondary Standard; Certified Reference Material
PHR1371 Benzalkonium Chloride 10% Solution Pharmaceutical Secondary Standard; Certified Reference Material
PHR1681 Benzalkonium Chloride 50% Solution Pharmaceutical Secondary Standard; Certified Reference Material
PHR1310 Benzene Pharmaceutical Secondary Standard; Certified Reference Material
PHR1425 Benzethonium Chloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1158 Benzocaine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1050 Benzoic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1204 Benzophenone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1028 1,4-Benzoquinone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1019 Benzyl alcohol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1213 Benzyl benzoate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1370 Benzyl Nicotinate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1712   Benzylphenylephrone (Phenylephrine related compound E) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1502 Berberine Chloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1349 Beta Alanine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1439 Beta-Cyclodextrin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1398 Betamethasone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1779 Betamethasone Acetate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1399   Betamethasone Dipropionate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1780 Betamethasone Valerate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1678 Bicalutamide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1296 Bifonazole Pharmaceutical Secondary Standard; Certified Reference Material
PHR1233 Biotin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1456 Bis(2 ethylhexyl)maleate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1831 Bromhexine hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material New
PHR1178 Budesonide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1128 Bupivacaine hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1729 Buprenorphine Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1730 Bupropion Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1209 1-Butanol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1563 2-Butanol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1621 Butoconazole Nitrate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1211 Butyl acetate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1752   2-(tert-butylamino)-3’-bromopiophenone hydrochloride (Bupropion Hydrochloride Related Compound A - USP) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1753   2-(tert-butylamino)-3’-bromopiophenone hydrochloride (Bupropion Hydrochloride Related Compound B - USP) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1738   6-(butylamino)-N-(2,6-dimethylphenyl)hexanamide (Bupivacaine Related Compound A) (Bupivacaine Impurity E) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1304 Butylated hydroxyanisole Pharmaceutical Secondary Standard; Certified Reference Material
PHR1117 Butylated Hydroxytoluene Pharmaceutical Secondary Standard; Certified Reference Material
PHR1306 3-tert-Butyl-4-hydroxyanisole Pharmaceutical Secondary Standard; Certified Reference Material
PHR1022   Butylparaben Pharmaceutical Secondary Standard; Certified Reference Material
PHR1934   (2RS)-2- (4-BUTYLPHENYL)PROPANOIC ACID SODIUM SALT (Ibuprofen Impurity B) Pharmaceutical Secondary Standard; Certified Reference Materialur
PHR1009 Caffeine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1095 Caffeine Melting Point Standard Pharmaceutical Secondary Standard; Certified Reference Material
PHR1362 Calcium Acetate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1361 Calcium Ascorbate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1326 Calcium carbonate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1457 Calcium Lactobionate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1232 Calcium-d-pantothenate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1119 D-Camphor Pharmaceutical Secondary Standard; Certified Reference Material
PHR1405 Capecitabine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1716   Capreomycin Sulfate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1202 Caprylic Acid (Octanoic Acid) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1450 Capsaicin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1307 Captopril Pharmaceutical Secondary Standard; Certified Reference Material
PHR1511 Carbachol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1067 Carbamazepine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1564 Carbazole(Carprofen Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1655 Carbidopa Pharmaceutical Secondary Standard; Certified Reference Material
PHR1684   Carbimazole Pharmaceutical Secondary Standard; Certified Reference Material
PHR1239 β-Carotene Pharmaceutical Secondary Standard; Certified Reference Material
PHR1452 Carprofen Pharmaceutical Secondary Standard; Certified Reference Material
PHR1265 Carvedilol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1283   Cefaclor Pharmaceutical Secondary Standard; Certified Reference Material
PHR1763   Cefepime hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1847   Ceftazidime Pharmaceutical Secondary Standard; Certified Reference Material
PHR1521   Ceftiofur Sodium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1382 Ceftriaxone Sodium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1683 Celecoxib Pharmaceutical Secondary Standard; Certified Reference Material
PHR1656 Cetirizine Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1133 Cetyl Alcohol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1166 Cetyl Palmitate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1226 Cetylpyridinum chloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1412   Chloramphenicol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1421 Chlorhexidine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1222 Chlorhexidine acetate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1294 Chlorhexidine digluconate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1459 Chlorhexidine Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1149 4’-CHLOROACETANILIDE(Acetaminophen Related Compound J) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1665 Chlorobenzene Pharmaceutical Secondary Standard; Certified Reference Material
PHR1744 3-Chlorobenzoic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1183 2-Chlorobenzophenone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1545 Chlorobutanol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1552 Chloroform Pharmaceutical Secondary Standard; Certified Reference Material
PHR1741 2-Chloro-5-nitrobenzoic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1688   (3-(4-chlorophenyl)-N-methyl-3-(pyridin-2-yl)propan-1-amine maleate) (Chlorpheniramine Related Compound C - USP) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1710   (RS)-2-[2-[4-[(4-chlorophenyl)phenylmethyl]piperazin-1-yl]ethoxy]acetic acid ethyl ester dihydrochloride (Cetirizine hydrochloride Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1258 Chloroquine phosphate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1179 Chlorothiazide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1478 Chloroxylenol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1016 Chlorpheniramine Maleate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1284   Chlorpropamide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1520 Chlortetracycline Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1237 Cholecalciferol (Vitamin D3) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1533 Cholesterol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1460 Choline Bitartrate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1251 Choline chloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1786 Chondroitin Sulfate Sodium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1503 Cilostazol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1075 Cimetidine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1089 Cimetidine hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1167 Ciprofloxacin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1044 Ciprofloxacin HCl Pharmaceutical Secondary Standard; Certified Reference Material
PHR1624 Cisplatin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1640 Citalopram Hydrobromide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1071 Citric acid, Anhydrous Pharmaceutical Secondary Standard; Certified Reference Material
PHR1038 Clarithromycin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1159   Clindamycin hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1021 Clindamycin Phosphate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1720 Clomipramine hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1431 Clopidogrel Bisulfate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1058 Clotrimazole Pharmaceutical Secondary Standard; Certified Reference Material
PHR1597   CMIT/MIT Pharmaceutical Secondary Standard; Certified Reference Material
PHR1764 Colchicine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1737   Colistimethate Sodium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1605   Colistin Sulfate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1477 Copper Sulfate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1462 Creatinine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1210 Cumene Pharmaceutical Secondary Standard; Certified Reference Material
PHR1234 Cyanocobalamin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1331 Cyanoguanidine (Metformin Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1687 Cyclohexane Pharmaceutical Secondary Standard; Certified Reference Material
PHR1815   1-cyclohexyl-3-[[4-[2-[[(6-methylpyrazin-2-yl)carbonyl]amino]ethyl]phenyl]sulfonyl]urea (Glipizide Related Compound C) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1653 6-[4-(1-Cyclohexyl-1H-tetrazol-5-yl)-butoxy]-1H-quinolin-2-one (Cilostazol Related Compound B - USP) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1676 1-(4-(5-Cyclohexyl-1H-tetrazol-1-yl)butyl)-6-(4-(1-cyclohexyl-1H-tetrazol-5-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one (Cilostazol Related Compound C - USP) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1404 Cyclophosphamide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1092 Cyclosporine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1102 L-Cysteine hydrochloride monohydrate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1323 L-Cystine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1787 Cytarabine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1350 Cytosine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1565 D4 Cyclomethicone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1566 D5 Cyclomethicone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1464 Dapsone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1070 Dehydrated Alcohol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1582 Dehydroacetic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1735 Demeclocycline HCl Pharmaceutical Secondary Standard; Certified Reference Material
PHR1300 Dequalinium chloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1723 Desipramine Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1680 Desloratidine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1830 Desogestrel Pharmaceutical Secondary Standard; Certified Reference Material New
PHR1526 Dexamethasone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1527 Dexamethasone Acetate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1768 Dexamethasone Sodium Phosphate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1228 Dexpanthenol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1018 Dextromethorphan HBr Pharmaceutical Secondary Standard; Certified Reference Material
PHR1000 Dextrose Pharmaceutical Secondary Standard; Certified Reference Material
PHR1916 Diacetone Alcohol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1652   Diallyl Acetic Acid (Valproic Acid Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1820   2,4-diamino-7-hydroxy-6-phenylpteridine (Triamterene Related Compound C) Pharmaceutical Secondary Standard; Certified Reference Material New
PHR1819   2,7-diamino-4-hydroxy-6-phenylpteridine (Triamterene Related Compound B) Pharmaceutical Secondary Standard; Certified Reference Material New
PHR1366 Dibutyl Phthalate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1216 Dibutyl sebacate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1368 2,3-Dichlorobenzoic acid (Lamotrigine Related Compound B)(Lamotrigine Impurity E) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1144 Diclofenac sodium salt Pharmaceutical Secondary Standard; Certified Reference Material
PHR1220 Diethanolamine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1674   2-(Diethylamino)-N-(2,4-dimethylphenyl)acetamide Hydrochloride (Lidocaine Related Compound I) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1675   2-(Diethylamino)-N-(2,5-dimethylphenyl)acetamide Hydrochloride (Lidocaine Related Compound J) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1045 Diethylene glycol
PHR1666 Diethyl Ether Pharmaceutical Secondary Standard; Certified Reference Material
PHR1476 Diethyl Phthalate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1771 Digoxin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1760   5,11-DIHYDRO-6H-11-ETHYL- 4-METHYL-DIPYRIDO[3,2-b:2’,3’- e][1,4]DIAZEPIN-6-ONE (Nevirapine Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1761   5,11-DIHYDRO-4-METHYL- 6H-DIPYRIDO[3,2-b:2’,3’-e][1,4] DIAZEPIN-6-ONE (Nevirapine Related Compound B) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1762   5,11-DIHYDRO-6H-11-PROPYL-4 -METHYL-DIPYRIDO [3,2-b:2’,3’-e][1,4] DIAZEPIN-6-ONE (Nevirapine Related Compound C) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1517 Dihydrostreptomycin Sulfate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1430   Dihydroxyacetone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1658 Dimenhydrinate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1194 3,4-Dimethoxybenzaldehyde (Verapamil Related Compound E - USP) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1193 3,4-Dimethoxybenzyl alcohol (Verapamil Related Compound F - USP) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1671 2′,6′-Dimethylacetanilide (Lidocaine RCC) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1670   2′,6′-Dimethylacetanilide (Lidocaine Related Compound C) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1532 Dimethylamine Hydrochloride(Metformin Impurity F) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1773 2-{{{5-[(DIMETHYLAMINO)METHYL] FURAN-2-YL}METHYL}SULFANYL} ETHANEAMINEHEMIFUMARATE SALT (Ranitidine Related Compound A), (Ranitidine impurity B) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1775 (N-[2-[[[5-[(DIMETHYLAMINO) METHYL]-2-FURANYL]METHYL] SULFINYL]ETHYL]-N-METHYL-2- NITRO-1,1-ETHENEDIAMINE (Ranitidine Related Compound C), (Ranitidine Impurity C) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1776   5-[3(dimethylamino)propyl]-10,11-dihydro-5H-dibenzo[a,d]-cyclohepten-5-ol (Amitriptyline Related Compound B - USP) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1669 2,6-Dimethylaniline (Lidocaine Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1553 Dimethylformamide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1756 (2RS)-N-(2,6-dimethylphenyl)piperidine-2-carboxamide (Bupivacaine Related Compound B) (Bupivacaine Impurity B) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1309   Dimethyl Sulfoxide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1549 1,4-Dioxane Pharmaceutical Secondary Standard; Certified Reference Material
PHR1015 Diphenhydramine hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1574 2,2-Diphenylglycine(Phenytoin Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1647 2,2′-Dipyridylamine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1514 Disodium Guanylate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1475 Disodium Inosinate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1690 Disulfiram Pharmaceutical Secondary Standard; Certified Reference Material
PHR1358   DMDM Hydantoin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1788   Docosahexaenoic Acid Ethyl Ester Pharmaceutical Secondary Standard; Certified Reference Material
PHR1584   Donepezil Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1090 Dopamine hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1789 Doxorubicin Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1145 Doxycycline hyclate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1420 Doxylamine Succinate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1510 Edetate Calcium Disodium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1289 Enalapril Maleate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1513 Enrofloxacin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1301 Ensulizole(2-Phenylbenzimidazole 5-sulfonic acid) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1691 4-Epianhydrotetracycline hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1333 Epigallocatechin gallate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1509 Epinephrine Bitartrate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1766 Eprinomectin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1238 Ergocalciferol (Vitamin D2) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1512 Ergosterol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1479 Erythritol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1039 Erythromycin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1610 Erythromycin Ethylsuccinate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1453 Erythrulose Pharmaceutical Secondary Standard; Certified Reference Material
PHR1733 Escitalopram Oxalate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1585   Esomeprazole Magnesium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1353 Estradiol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1535 Estrone Pharmaceutical Secondary Standard; Certified Reference Material
PHR1480 Ethinyl Estradiol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1413 Ethosuximide
PHR1550 2-Ethoxyethanol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1481 Ethyl Acetate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1229 Ethylbenzene Pharmaceutical Secondary Standard; Certified Reference Material
PHR1068 Ethylenediaminetetraacetic acid disodium salt dihydrate
PHR1046 Ethylene glycol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1295   Ethylene Oxide Stock Solution Pharmaceutical Secondary Standard; Certified Reference Material
PHR1914 2-Ethylhexanoic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1267 Ethyl maltol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1011 Ethylparaben Pharmaceutical Secondary Standard; Certified Reference Material
PHR1268 Ethyl vanillin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1828 Eucalyptol (cineole) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1269 Eugenol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1634 Exemestane Pharmaceutical Secondary Standard; Certified Reference Material
PHR1696 Famciclovir Pharmaceutical Secondary Standard; Certified Reference Material
PHR1055 Famotidine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1246 Fenofibrate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1482 Ferrous Fumarate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1791 Ferulic Acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1685 Fexofenadine HCl Pharmaceutical Secondary Standard; Certified Reference Material
PHR1160 Fluconazole Pharmaceutical Secondary Standard; Certified Reference Material
PHR1659 Flucytosine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1442 Flunixin Meglumine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1397 Fluocinolone Acetonide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1862   2-(4-fluorophenyl)-1,3-bis(1H-1,2,4-triazol-1-yl)-propan-2-ol (Fluconazole Related Compound B) Pharmaceutical Secondary Standard; Certified Reference Material New
PHR1174 Fluoroquinolonic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1651   2-[2-fluoro-4-(1H-1,2,4-triazol-1-yl)phenyl]-1,3-bis(1H-1,2,4-triazol-1-yl)-propan-2-ol (Fluconazole Related Compound A) (Fluconazole Impurity B) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1227 Fluorouracil Pharmaceutical Secondary Standard; Certified Reference Material
PHR1394 Fluoxetine Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1792 Fluphenazine Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1499 Flurbiprofen Pharmaceutical Secondary Standard; Certified Reference Material
PHR1702 Fluticasone Propionate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1620 Fluvastatin sodium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1793 Fluvoxamine Maleate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1035 Folic acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1436   Foscarnet Sodium Pharmaceutical Secondary Standard; Certified Reference Material
PHR1002 Fructose Pharmaceutical Secondary Standard; Certified Reference Material
PHR1270 Fumaric Acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1057 Furosemide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1049 Gabapentin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1206 Galactose Pharmaceutical Secondary Standard; Certified Reference Material
PHR1623   Galantamine Hydrobromide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1593 Ganciclovir Pharmaceutical Secondary Standard; Certified Reference Material
PHR1286 Gemfibrozil Pharmaceutical Secondary Standard; Certified Reference Material
PHR1077 Gentamicin Sulfate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1567 Gibberellic Acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1748 Glacial Acetic Acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1288   Gliclazide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1617   Glimepiride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1725   Glimepiride cis-Isomer (Glimepiride Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1727   Glimepiride Urethane (Glimepiride Related Compound C) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1818 Glipizide Pharmaceutical Secondary Standard; Certified Reference Material
PHR1199 Glucosamine hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1107 L-Glutamic acid
PHR1125 L-Glutamine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1359 Glutathione Pharmaceutical Secondary Standard; Certified Reference Material
PHR1287 Glyburide (Glibenclamide) Pharmaceutical Secondary Standard; Certified Reference Material
PHR1020 Glycerin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1484   Glyceryl Monooleate Pharmaceutical Secondary Standard; Certified Reference Material
PHR1111 Glycine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1427 Glycolic Acid Pharmaceutical Secondary Standard; Certified Reference Material
PHR1616 Granisetron Hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1534 Griseofulvin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1136 Guaiacol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1027 Guaifenesin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1751 Guanfacine hydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1243 Guanine Pharmaceutical Secondary Standard; Certified Reference Material
PHR1724 Haloperidol Pharmaceutical Secondary Standard; Certified Reference Material
PHR1428 HEPES Pharmaceutical Secondary Standard; Certified Reference Material
PHR1554 Heptane Pharmaceutical Secondary Standard; Certified Reference Material
PHR1794 Hesperidin Pharmaceutical Secondary Standard; Certified Reference Material
PHR1555 Hexane Pharmaceutical Secondary Standard; Certified Reference Material
PHR1357   Histamine Dihydrochloride Pharmaceutical Secondary Standard; Certified Reference Material
PHR1108 L-Histidine Pharmaceutical Secondary Standard; Certified Reference Material