Determine the necessary mass, volume, or concentration for preparing a solution.
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≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Protected from light,Desiccated,Room temperature Ships Normal Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 22 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
An amino acid precursor of serotonin and melatonin.
application:
DL-Tryptophan is an amino acid precursor of serotonin and melatonin. It is a dietary supplement for use as an antidepressant, anxiolytic, and sleep aid. DL-tryptophan also can be used as feed nutrition enhancer, antioxidants.
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Organoheterocyclic compounds |
| Class | Indoles and derivatives |
| Subclass | Indolyl carboxylic acids and derivatives |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Indolyl carboxylic acids and derivatives |
| Alternative Parents | Alpha amino acids 3-alkylindoles Aralkylamines Substituted pyrroles Benzenoids Heteroaromatic compounds Amino acids Monocarboxylic acids and derivatives Carboxylic acids Azacyclic compounds Organopnictogen compounds Organic oxides Monoalkylamines Hydrocarbon derivatives Carbonyl compounds |
| Molecular Framework | Aromatic heteropolycyclic compounds |
| Substituents | Indolyl carboxylic acid derivative - Alpha-amino acid - Alpha-amino acid or derivatives - 3-alkylindole - Indole - Aralkylamine - Benzenoid - Substituted pyrrole - Heteroaromatic compound - Pyrrole - Amino acid or derivatives - Amino acid - Carboxylic acid derivative - Carboxylic acid - Monocarboxylic acid or derivatives - Azacycle - Amine - Primary aliphatic amine - Hydrocarbon derivative - Organic oxide - Organic oxygen compound - Organic nitrogen compound - Carbonyl group - Organonitrogen compound - Organooxygen compound - Primary amine - Organopnictogen compound - Aromatic heteropolycyclic compound |
| Description | This compound belongs to the class of organic compounds known as indolyl carboxylic acids and derivatives. These are compounds containing a carboxylic acid chain (of at least 2 carbon atoms) linked to an indole ring. |
| External Descriptors | alpha-amino acid - aromatic amino acid - aminoalkylindole |
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Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
| Certificate of Analysis | Sep 09, 2025 | T103482 | |
| Certificate of Analysis | Sep 09, 2025 | T103482 | |
| Certificate of Analysis | Nov 11, 2024 | T103482 | |
| Certificate of Analysis | Sep 14, 2024 | T103482 | |
| Certificate of Analysis | Jul 27, 2024 | T103482 | |
| Certificate of Analysis | Jul 27, 2024 | T103482 | |
| Certificate of Analysis | Jul 27, 2024 | T103482 | |
| Certificate of Analysis | Jun 29, 2024 | T103482 | |
| Certificate of Analysis | Jun 29, 2024 | T103482 | |
| Certificate of Analysis | Jul 28, 2022 | T103482 | |
| Certificate of Analysis | Jul 28, 2022 | T103482 | |
| Certificate of Analysis | Jul 28, 2022 | T103482 | |
| Certificate of Analysis | Jul 28, 2022 | T103482 |
| Solubility | DL-Tryptophan is an amino acid precursor of serotonin and melatonin.Soluble I water. 10 g/L (20°C), Hcl and alkalies. Sparingly soluble in alcohol. |
|---|---|
| Sensitivity | Light sensitive. |
| Melt Point(°C) | 289-290 °C |
| Molecular Weight | 204.220 g/mol |
| XLogP3 | -1.100 |
| Hydrogen Bond Donor Count | 3 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 3 |
| Exact Mass | 204.09 Da |
| Monoisotopic Mass | 204.09 Da |
| Topological Polar Surface Area | 79.100 Ų |
| Heavy Atom Count | 15 |
| Formal Charge | 0 |
| Complexity | 245.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 1 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |