Melatonin
Drug ingredientCAS 73-31-4
This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.
Why supply is unknownProduction is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.
Where It Comes From
Customs basis: HS 293790 · basket
These shares come from HS customs code 293790, which covers 10 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.
- Switzerland
- Finland
- Sweden
- Canada
- South Africa
- Netherlands
- Hungary
- Spain
- Argentina
- Israel
- Ecuador
- South Korea
- Poland
17 FDA-registered drug labelers
Why It Matters
Appears in 40 drug and cosmetic product listings (FDA).
- •GUNA-FLAM
- •Perfect Sleep
- •Vascuflow
- •Melatonin Pro
- •Young Again
- •ANTI AGE Stress
- •GUNA-MALE
- •GUNA-Prostate
Show all 40
- •GUNA-Awareness
- •Neurotransmitter Pro
- •Pineal Liquescence
- •GUNA-Virus
- •HGH Vitality
- •High Vitality Tab
- •Melatonin
- •GUNA-Dermo
- •GUNA-Digest
- •Sleep Tight
- •Melatonin 1527
- •GUNA-Tonsils
- •GUNA-Sleep
- •Neuro I
- •HP Axis
- •Bio Thalamus Phase
- •GUNA-FEM
- •GUNA-Dizzy
- •GUNA-Hypertension
- •GUNA-Spasm
- •GUNA-Geriatrics
- •High Vitality
- •Melatonin CORD
- •Pollutox
- •Multi-Phenolic
- •GUNA-PMS
- •Melatonin Forte
- •Insomnia
- •Pineal Liquescence 3030
- •Melatonin Phenolic
- •Neuro Links
- •Sleep Aid
Vendor Pricing
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
38 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 |
|---|---|---|---|---|
| Chemscene | United States | $0.32 | 1 kg | — |
| Angene Chemical | China → Hong Kong | $0.33 | 500 g | 98% |
| BLD Pharmatech GmbH | Germany | $0.33 | 1 kg | 97% |
| BLD Pharmatech Ltd. | China | $0.33 | 1 kg | 97% |
| Ambeed, Inc. | United States | $0.33 | 1 kg | 97% |
| A2B Chem LLC | United States | $0.37 | 1 kg | 98% |
| AK Scientific Specialized | United States | $0.38 | 1 kg | 98% |
| Combi-Blocks, Inc. | United States | $0.38 | 1 kg | 97% |
| AA BLOCKS | United States | $0.39 | 1 kg | 98% |
| BLD Pharmatech Co., Limited | United States | $0.40 | 500 g | 97% |
| AstaTech, Inc | United States | $0.59 | 100 g | 95% |
| Fluorochem EU | Germany | $0.60 | 100 g | 98% |
| Fluorochem UK | United Kingdom | $0.80 | 25 g | 98% |
| A2B Chem LLC (2 weeks) | United States | $1.44 | 25 g | 98% |
| AA BLOCKS (2 weeks) | United States | $1.68 | 25 g | 98% |
| AK Scientific, Inc. | United States | $2.16 | 100 g | 98.5% |
| Angene International Limited | United States | $3.67 | 100 g | 98.5% |
| Manchester Organics | United Kingdom | $5.64 | 5 g | 98% |
| Cayman Europe | Estonia | $7.66 | 100 g | 98% |
| MedChemExpress MCE | Sweden | $9.51 | 50 g | 99.98% |
| Apexbio Technology LLC | United States | $20.00 | 5 g | 99.67% |
| Apollo Scientific UK | United Kingdom | $21.00 | 1 g | — |
| MedKoo Biosciences, Inc | United States | $26.00 | 25 g | 98% |
| Molnova | China | $29.00 | 1 g | 99% |
| TargetMol Chemicals | China → United States | $31.00 | 1 g | 99.89% |
| Sigma-Aldrich (Rush Stock) | Germany | $128.23 | 10 g | 98% |
| Sigma-Aldrich | Germany | $128.23 | 10 g | 98% |
| ChemNorm | China | $150.00 | 100 mg | 98% |
| CliniSciences GmbH | Switzerland | $322.50 | 100 mg | 99% |
| Labotest KG | Germany | $453.00 | 1000 mg | 90% |
| ChemFaces | China | $1500.00 | 20 mg | 98% |
| Princeton BioMolecular Research (SC) | United States | $2900.00 | 100 mg | 90% |
| Vitas M Chemical Limited | Hong Kong | $3170.00 | 100 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
| Life Chemicals Inc. | Ukraine → Canada | $4650.00 | 100 mg | 90% |
| ChemDiv, Inc. | United States | $6700.00 | 40 mg | 90% |
| Key Organics Ltd. | United Kingdom | $6900.00 | 10 mg | 97% |
| Asinex | Netherlands | $87120.00 | 2 mg | 90% |
Chemical Identity
Data Sources
- PubChem · compound 896Retrieved 2026-04-07
- FDA National Drug Code directoryRetrieved 2026-04-25
- FDA National Drug Code directoryRetrieved 2026-04-07
- US Census international tradeReporting year: 2024 · Retrieved 2026-10-04
Brief citations
Melatonin (CAS 73-31-4) https://chemicalindependence.com/chemical/73-31-4/ PubChem: 896. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/896 FDA National Drug Code directory: CAS 73-31-4. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293790 for CAS 73-31-4. Reporting year: 2024. https://usatrade.census.gov/