If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
PHR1176
Tryptophan
Pharmaceutical Secondary Standard; Certified Reference Material
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
1 g | Estimated to ship onOctober 02, 2026fromMILWAUKEE | $115.00 |
About This Item
Quality Segment
grade
certified reference material, pharmaceutical secondary standard
agency
traceable to Ph. Eur. T2610000, traceable to USP 1700501
API family
tryptophan
CofA
current certificate can be downloaded
technique(s)
HPLC: suitable, gas chromatography (GC): suitable
application(s)
pharmaceutical (small molecule)
format
neat
storage temp.
2-30°C
SMILES string
[nH]1c2c(c(c1)CC(N)C(=O)O)cccc2
InChI
1S/C11H12N2O2/c12-9(11(14)15)5-7-6-13-10-4-2-1-3-8(7)10/h1-4,6,9,13H,5,12H2,(H,14,15)
InChI key
QIVBCDIJIAJPQS-UHFFFAOYSA-N
General description
Certified pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to in-house working standards.
Application
Analysis Note
Other Notes
1 of 1
This Item | |||
|---|---|---|---|
| description Pharmaceutical Secondary Standard; Certified Reference Material | description European Pharmacopoeia (EP) Reference Standard | description United States Pharmacopeia (USP) Reference Standard | description EMPROVE® EXPERT, Ph. Eur., BP, ChP, JP, USP |
| technique(s) HPLC: suitable, gas chromatography (GC): suitable | technique(s) - | technique(s) - | technique(s) - |
| format neat | format neat | format neat | format - |
| Quality Level 300 | Quality Level - | Quality Level - | Quality Level 500 |
| grade certified reference material, pharmaceutical secondary standard | grade pharmaceutical primary standard | grade pharmaceutical primary standard | grade - |
| storage temp. 2-30°C | storage temp. 2-8°C | storage temp. - | storage temp. 2-30°C |
| API family tryptophan | API family tryptophan | API family tryptophan | API family - |
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
-
-
Il prodotto cod.PHR1176 è identificato come CRM ma non ho trovato nel certificato il riferimento alla certificazione ISO 17034 per il prodotto, a differenza del cod. 51145 dove viene riportata. Chiedo se realmente sono entrambe CRM secondo ISO17034?
1 answer-
The Certified Reference Materials currently available are ISO17034 Certified. This information is referenced on the lot-specific Certificate of Analysis, in the Accreditation section. Please see the link below to review a sample or lot-specific Certificate:
https://www.sigmaaldrich.com/product/sial/phr1176#product-documentationPlease see the following link to review the site ANAB Certificate of Accreditation:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/266/955/iso17025-cert-scopev010-july26.pdfHelpful?
-