Acetaminophen Impurities

Find here the secondary pharmaceutical standard of the native API Acetaminophen traceable to USP, PhEur and BP.

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PHR1531 2-Acetamidophenol Pharmaceutical Secondary Standard; Certified Reference Material 2′-Hydroxyacetanilide 2-Acetamidophenol (Acetaminophen Related Compound C) N-(2-Hydroxyphenyl)acetamide NSC 3989
A-134   Acetaminophen (Paracetamol) Impurity Mixture solution 25 μg/mL in methanol (each component), certified reference material, ampule of 1 mL  
PHR1530 Acetanilide (Acetaminophen Related Compound D) Pharmaceutical Secondary Standard; Certified Reference Material N-Phenylacetamide Acetanilide
A-135 4′-Acetoxyacetanilide (Acetaminophen RCA) solution 250 μg/mL in acetonitrile, certified reference material, ampule of 1 mL New  
PHR1612   4′-Acetoxyacetanilide (Acetaminophen Related Compound A) Pharmaceutical Secondary Standard; Certified Reference Material 4-(Acetylamino)phenyl acetate p-Acetoxyacetanilide
A-136 4-Aminophenol 250 μg/mL in acetonitrile, certified reference material, ampule of 1 mL New 4-Hydroxyaniline
PHR1148 4-Aminophenol (Acetaminophen Related Compound K) (Paracetamol Impurity K) Pharmaceutical Secondary Standard; Certified Reference Material 4-Aminophenol 4-Hydroxyaniline
PHR1149 4’-CHLOROACETANILIDE(Acetaminophen Related Compound J) Pharmaceutical Secondary Standard; Certified Reference Material 4′-Chloroacetanilide N-(4-Chlorophenyl)acetamide Acetic acid 4-chloroanilide NSC 40563 NSC 444
C-166 4-Chloroacetanilide (Acetaminophen RCJ) hydrochloride solution 250 μg/mL in acetonitrile, certified reference material, ampule of 1 mL New  
PHR1642   N-(4-Hydroxyphenyl)Propanamide (Acetaminophen Related Compound B - USP) Pharmaceutical Secondary Standard; Certified Reference Material N-(4-Hydroxyphenyl)propanamide N-Propionyl-p-aminophenol
PHR1150 4-NITROPHENOL (Acetaminophen Related Compound F)(Paracetamol Impurity F) Pharmaceutical Secondary Standard; Certified Reference Material 4-Nitrophenol p-Nitrophenol