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phenytoin

Drug ingredient

CAS 57-41-0

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

Molecular structure of 57-41-0
US productionNot reported
Import value, 2024$19M
Top sourceChina 55%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

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 293321 · basket

These shares come from HS customs code 293321, which covers 22 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 55%ChinaTW 34%TaiwanIL 3%IsraelES 2%SpainIN 1%India
21 FDA-registered drug labelers
American Health Packaging
ATLANTIC BIOLOGICALS CORP.
B.V. KATWIJK CHEMIE
Harman Finochem Limited
LETCO MEDICAL, LLC
Major Pharmaceuticals
Mylan Pharmaceuticals Inc.
NCS HealthCare of KY, LLC dba Vangard Labs
PAI Holdings, LLC dba PAI Pharma
Parke-Davis Div of Pfizer Inc
Pharmacia and Upjohn Company LLC
Prasco Laboratories
Professional Compounding Centers of America
Professional Compounding Centers of America dba PCCA
RECORDATI INDUSTRIA CHIMICA E FARMACEUTICA SPA
REMEDYREPACK INC.
Rising Pharma Holdings, Inc.
Spectrum Laboratory Products, Inc.
Sun Pharmaceutical Industries, Inc.
Swati Spentose Private Limited
Viatris Specialty LLC

Why It Matters

Sectors
Health
Downstream Uses

Appears in 4 drug and cosmetic product listings (FDA).

  • •Phenytoin
  • •Phenytoin Infatabs
  • •Dilantin-125
  • •Dilantin Infatabs
FDA Shortage Status
No FDA shortage records

Vendor Pricing

$0.16/gAaron Chemicals LLC
CountryHong Kong
Pack$82.00 / 500 g
Purity99%
Vendors28 available

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

27 more vendors
VendorCountry$/gPackPurity
A2B Chem LLCUnited States$0.19500 g99%
Angene ChemicalChina → Hong Kong$0.20250 g99%
AA BLOCKSUnited States$0.24500 g99%
ALFA AESARGermany$0.28500 g99%
AstaTech, IncUnited States$0.37250 g95%
Sigma-Aldrich (Rush Stock)Germany$0.68100 g98%
Sigma-AldrichGermany$0.68100 g98%
Angene International LimitedUnited States$0.72500 g98%
Cayman EuropeEstonia$0.73250 g98%
Fluorochem UKUnited Kingdom$0.7425 g99%
MedKoo Biosciences, IncUnited States$4.60100 g98%
Fulfilled by MolportLatvia$5.001 g99%
Ambeed, Inc.United States$5.005 g99%
Apexbio Technology LLCUnited States$16.005 g99.89%
MedChemExpress MCESweden$26.625 g99.95%
MolnovaChina$45.001 g99%
TargetMol ChemicalsChina → United States$50.001 g99.95%
InterbioscreenHong Kong$51.0010 g95%
TargetMol Chemicals EUAustria$74.00500 mg99.95%
Labotest KGGermany$217.805000 mg90%
Maybridge, Ltd.United Kingdom$2414.30100 mg90%
Vitas M Chemical LimitedHong Kong$4020.0050 mg90%
Princeton BioMolecular Research (SC)United States$4200.0050 mg90%
AngeneChina → Hong Kong$4266.6730 mg99%
Life Chemicals Inc.Ukraine → Canada$5400.0025 mg90%
AsinexNetherlands$6461.40100 mg90%
TimTec, LLCUnited States$14666.6730 mg90%

Chemical Identity

CAS57-41-0
PubChem CID1775
DTXSIDDTXSID8020541
FormulaC15H12N2O2
Mol. Weight252.27 g/mol
SMILESC1=CC=C(C=C1)C2(C(=O)NC(=O)N2)C3=CC=CC=C3

Data Sources

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Brief citations

phenytoin (CAS 57-41-0) https://chemicalindependence.com/chemical/57-41-0/ PubChem: 1775. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/1775 FDA National Drug Code directory: CAS 57-41-0. 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 293321 for CAS 57-41-0. Reporting year: 2024. https://usatrade.census.gov/