1700501

L-Tryptophan

United States Pharmacopeia (USP) Reference Standard

• Synonym(s): (S)-2-Amino-3-(3-indolyl)propionic acid, L-α-Amino-3-indolepropionic acid
• Empirical Formula (Hill Notation): C₁₁H₁₂N₂O₂
• CAS Number: 73-22-3
• Molecular Weight: 204.23
• UNSPSC Code: 41116107
• NACRES: NA.24
• PubChem Substance ID: 329751437
• MDL number: MFCD00064340
• Beilstein/REAXYS Number: 86197

Properties

• grade: pharmaceutical primary standard
• agency: USP
• API family: tryptophan
• manufacturer/tradename: USP
• mp: 280-285 °C (dec.) (lit.)
• application(s): pharmaceutical (small molecule); pharmaceutical
• 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

Description

General description

Find answers to frequently asked questions on USP products in USP FAQs.

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.
For further information and support please go to the website of the issuing Pharmacopoeia.

Application

L-Tryptophan USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia.
Also, for use with USP monographs such as:

• Tryptophan
• 5-Hydroxy-l-tryptophan

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Amino acid precursor of serotonin and melatonin

Sales restrictions may apply.

Safety Information

• Storage Class: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable