tryptophan
Drug ingredientThis chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
Where It Comes From
17 FDA-registered drug labelers
Ajinomoto Health & Nutrition North America Inc.
Ajinomoto Health & Nutrtion North America Inc.
Apex Energetics Inc.
B. Braun Medical Inc.
Baxter Healthcare Company
Baxter Healthcare Corporation
BioActive Nutritional, Inc.
Deseret Biologicals, Inc.
Dr. Donna Restivo DC
Energique, Inc.
Fresenius Kabi USA, LLC
Guna spa
ICU Medical Inc.
KYOWA HAKKO BIO CO., LTD.
Liddell Laboratories, Inc.
Pro Weight Loss Inc.
Professional Complementary Health Formulas
Why It Matters
Sectors
Health
Downstream Uses
Appears in 27 drug and cosmetic product listings (FDA).
- •Aminosyn-PF
- •Perfect Sleep
- •Bio Viscum Phase
- •Plenamine
- •L-Tryptophan 7423
- •Kabiven
- •Clinimix
- •Tryptophan
Show all 27
- •Clinimix E
- •L-Tryptophan High 7424
- •Clinisol
- •GUNA-Digest
- •Sleep Tight
- •ProSol
- •TrophAmine
- •Aminosyn II
- •Metabatone
- •Vital Skin Hair Nails
- •E08 Bioclock Regulator
- •Osteobios
- •Travasol
- •GUNA-MOOD
- •Perikabiven
- •Serotonin/L-Tryptophan 1548
- •Growth Hormone Drops 2160
- •Premasol - sulfite-free (Amino Acid)
- •Sleep Aid
FDA Shortage Status
Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."
No FDA shortage records
Vendor Pricing
$0.11/gAngene Chemical
CountryChina (registered: Hong Kong)
Pack$56.00 / 500 g
Purity98%
Vendors31 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
30 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Aaron Chemicals LLC | Hong Kong | $0.12 | 500 g | 98% |
| AK Scientific Specialized | United States | $0.20 | 1 kg | 98% |
| A2B Chem LLC | United States | $0.21 | 500 g | 98% |
| Chemscene | United States | $0.22 | 1 kg | — |
| BLD Pharmatech Ltd. | China | $0.23 | 1 kg | 98% |
| Ambeed, Inc. | United States | $0.23 | 1 kg | 98% |
| BLD Pharmatech Co., Limited | United States | $0.23 | 500 g | 98% |
| BLD Pharmatech GmbH | Germany | $0.23 | 500 g | 98% |
| AK Scientific, Inc. | United States | $0.25 | 1 kg | 98.5% |
| Combi-Blocks, Inc. | United States | $0.25 | 1 kg | 97% |
| AA BLOCKS | United States | $0.28 | 500 g | 98% |
| Fluorochem EU | Germany | $0.28 | 100 g | 97% |
| MedChemExpress MCE | Sweden | $0.64 | 500 g | 99.98% |
| Acrotein ChemBio, Inc. | United States | $0.69 | 500 g | — |
| MedKoo Biosciences, Inc | United States | $1.08 | 1 kg | 98% |
| Synthonix | United States | $1.20 | 25 g | 97% |
| Angene International Limited | United States | $1.43 | 100 g | 97% |
| Fluorochem UK | United Kingdom | $1.43 | 5 g | 97% |
| Cayman Europe | Estonia | $2.11 | 100 g | 98% |
| Sigma-Aldrich (Rush Stock) | Germany | $2.28 | 50 g | 99% |
| Sigma-Aldrich | Germany | $2.28 | 50 g | 99% |
| Molnova | China | $27.00 | 1 g | 99% |
| TargetMol Chemicals | China → United States | $29.00 | 1 g | 99.89% |
| Vitas M Chemical Limited | Hong Kong | $390.00 | 500 mg | 90% |
| Maybridge, Ltd. | United Kingdom | $2414.30 | 100 mg | 90% |
| Otava, Ltd. | Ukraine | $2724.00 | 50 mg | 90% |
| Princeton BioMolecular Research (SC) | United States | $2900.00 | 100 mg | 90% |
| ChemDiv, Inc. | United States | $4070.00 | 100 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
| AnalytiCon Discovery - a Division of BRAIN Biotech AG | Germany | $73689.00 | 50 mg | 85% |
Chemical Identity
CAS73-22-3
PubChem CID6305
DTXSIDDTXSID5021419
FormulaC11H12N2O2
Mol. Weight204.22 g/mol
SMILESC1=CC=C2C(=C1)C(=CN2)CC(C(=O)O)N
Data Sources
63052026-04-07
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/tryptophan/cids/JSON
Archive: data/sources/pubchem_name/tryptophan.json
CAS 73-22-32026-04-24
https://www.epa.gov/tsca-inventory
Archive: data/sources/tsca/tsca_inventory.csv
bulk match2026-04-07
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json