L-Tryptophan
L-Tryptophan (CAS 73-22-3), molecular formula C11H12N2O2, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- (S)-2-Amino-3-(3-indolyl)propionic acid,L-α-Amino-3-indolepropionic acid

| Molecular weight | 204.23 |
|---|---|
| Empirical formula | C11H12N2O2 |
| Assay | 99.0-101.0% |
| Form | powder |
| Solubility | 1 M HCl: soluble10 mg/mL |
| Optical activity | [α]20/D −31.5±1°, c = 1% in H2O |
| Loss on drying | ≤0.1% loss on drying, 20 °C (HV) |
| Melting point | 280-285 °C (dec.)(lit.) |
| Impurities tested | endotoxin, tested |
| Suitability | meets EP, JP, USP testing specificationssuitable for cell culture |
| Biological source | from non-animal source |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 1 |
| Anion traces | chloride (Cl-): ≤50 mg/kgsulfate (SO42-): ≤50 mg/kg |
| Ignition residue | ≤0.1% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Absorption | absorption0.5M/326 nm, 0.5 M HCl cut-off |
|---|
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is L-Tryptophan?
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L-Tryptophan (CAS 73-22-3), molecular formula C11H12N2O2, is a high-purity chemical supplied by Tech Serve Solutions for chemical synthesis applications, to USP, BP and EP standards.
What grades of L-Tryptophan does Tech Serve Solutions supply?
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Tech Serve Solutions supplies L-Tryptophan in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of L-Tryptophan?
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L-Tryptophan has CAS number 73-22-3 and molecular formula C11H12N2O2. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for L-Tryptophan?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of L-Tryptophan ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should L-Tryptophan be stored?
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Store L-Tryptophan in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is L-Tryptophan used for?
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L-Tryptophan is used in chemical synthesis applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for L-Tryptophan?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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