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methionine

Drug ingredient

CAS 63-68-3

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

Molecular structure of 63-68-3
US productionNot reported
Import value, 2024$14M
Top sourceChina 72%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

Why supply is unknown

Production 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 293040 · narrow

These shares come from HS customs code 293040, which covers 3 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 72%ChinaJP 18%JapanMY 9%Malaysia
22 FDA-registered drug labelers
Ajinomoto Co., Inc.
Ajinomoto Health & Nutrition North America Inc.
B. Braun Medical Inc.
Baxter Healthcare Company
Baxter Healthcare Corporation
BioActive Nutritional, Inc.
Deseret Biologicals, Inc.
Dr. Donna Restivo DC
Energique, Inc.
Evonik Rexim (Nanning) Pharmaceutical Co., Ltd.
Fresenius Kabi USA, LLC
Guna spa
ICU Medical Inc.
InLight Creation, LLC.
KYOWA HAKKO BIO CO., LTD.
Liddell Laboratories, Inc.
NURAY CHEMICALS PRIVATE LIMITED
Nutritional Specialties, Inc.
Professional Complementary Health Formulas
Spectrum Laboratory Products, Inc.
STHREE CHEMICALS PRIVATE LIMITED
Willow Birch Pharma, LLC

Why It Matters

Sectors
Health
Downstream Uses

Appears in 25 drug and cosmetic product listings (FDA).

  • •Aminosyn-PF
  • •Metalogin
  • •Plenamine
  • •Kabiven
  • •Clinimix
  • •Clinimix E
  • •Clinisol
  • •Metox
Show all 25
  • •L-Methionine High 7418
  • •ProSol
  • •TrophAmine
  • •Aminosyn II
  • •Metabatone
  • •Vital Skin Hair Nails
  • •L-Methionine 7417
  • •Osteobios
  • •Travasol
  • •Methylation Assist Liquescence
  • •E.O.L.
  • •Perikabiven
  • •Free Radical
  • •MetDetox
  • •SAMe Liquescence 3036
  • •Metab
  • •Premasol - sulfite-free (Amino Acid)
FDA Shortage Status
No FDA shortage records

Vendor Pricing

$0.01/gAaron Chemicals LLC
CountryHong Kong
Pack$7.00 / 500 g
Purity95%
Vendors31 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

30 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.02500 g99%
A2B Chem LLCUnited States$0.031 kg95%
AA BLOCKSUnited States$0.031 kg98%
BLD Pharmatech Co., LimitedUnited States$0.031 kg98%
Ambeed, Inc.United States$0.031 kg98%
BLD Pharmatech GmbHGermany$0.041 kg98%
BLD Pharmatech Ltd.China$0.041 kg98%
ChemsceneUnited States$0.051 kg—
Acrotein ChemBio, Inc.United States$0.06500 g—
SynthonixUnited States$0.06500 g95%
Sigma-Aldrich (Rush Stock)Germany$0.0610 kg99%
Sigma-AldrichGermany$0.0610 kg99%
Fluorochem EUGermany$0.11100 g95%
AK Scientific SpecializedUnited States$0.14500 g95%
AK Scientific, Inc.United States$0.18500 g99%
Combi-Blocks, Inc.United States$0.251 kg98%
Angene International LimitedUnited States$0.35500 g99%
MedKoo Biosciences, IncUnited States$0.561 kg98%
MedChemExpress MCESweden$0.87100 g98%
AstaTech (2 weeks)United States$6.005 g98%
InterbioscreenHong Kong$24.0010 g95%
MolnovaChina$74.00500 mg99%
Labotest KGGermany$217.805000 mg90%
Vitas M Chemical LimitedHong Kong$390.00500 mg90%
Otava, Ltd.Ukraine$460.00250 mg95%
Princeton BioMolecular Research (SC)United States$2900.00100 mg90%
AngeneChina → Hong Kong$4266.6730 mg99%
AsinexNetherlands$6461.40100 mg90%
Key Organics Ltd.United Kingdom$6900.0010 mg98%
TimTec, LLC (back-ordered)United States$32000.0015 mg94%

Chemical Identity

CAS63-68-3
PubChem CID6137
DTXSIDDTXSID5040548
FormulaC5H11NO2S
Mol. Weight149.21 g/mol
SMILESCSCCC(C(=O)O)N

Data Sources

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Brief citations

methionine (CAS 63-68-3) https://chemicalindependence.com/chemical/63-68-3/ PubChem: 6137. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/6137 EPA TSCA Inventory: CAS 63-68-3. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293040 for CAS 63-68-3. Reporting year: 2024. https://usatrade.census.gov/