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
51145
L-Tryptophan
certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
Synonym(s):
(S)-2-Amino-3-(3-indolyl)propionic acid, L-α-Amino-3-indolepropionic acid
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About This Item
Quality Segment
product line
TraceCERT®
grade
certified reference material, TraceCERT®
analyte chemical class(es)
amino acids, peptides, proteins
manufacturer/tradename
Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
technique(s)
HPLC: suitable, gas chromatography (GC): suitable
color
white
mp
280-285 °C (dec.) (lit.)
application(s)
food and beverages
format
neat
SMILES string
N[C@@H](Cc1c[nH]c2ccccc12)C(O)=O
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)/t9-/m0/s1
InChI key
QIVBCDIJIAJPQS-VIFPVBQESA-N
General description
Certified content by quantitative NMR incl. uncertainty and expiry date are given on the certificate.
Download your certificate at: http://www.sigma-aldrich.com.
Check out the entire portfolio of our amino acids certified reference materials (CRM)
Application
Packaging
Other Notes
Legal Information
Disclaimer
1 of 1
This Item | |||
|---|---|---|---|
| description certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland | description reagent grade, ≥98% (HPLC) | description United States Pharmacopeia (USP) Reference Standard | description BioUltra, ≥99.5% (NT) |
| application(s) food and beverages | application(s) cell analysis | application(s) pharmaceutical (small molecule) | application(s) cell analysis |
| technique(s) gas chromatography (GC): suitable, HPLC: suitable | technique(s) - | technique(s) - | technique(s) - |
| format neat | format - | format neat | format - |
| Quality Level 300 | Quality Level 200 | Quality Level - | Quality Level 100 |
| grade TraceCERT®, certified reference material | grade reagent grade | grade pharmaceutical primary standard | grade - |
| manufacturer/tradename Manufactured by: Sigma-Aldrich Production GmbH, Switzerland | manufacturer/tradename - | manufacturer/tradename USP | manufacturer/tradename - |
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Storage Class
13 - Non Combustible Solids
WGK
WGK 1
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves, type N95 (US)
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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
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