W

Warfarin

IUPAC: 4-hydroxy-3-(3-oxo-1-phenylbutyl)chromen-2-one

C19H16O4 Organic Compounds CAS 81-81-2
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Quick Reference
Formula / NotationC19H16O4
CAS Number81-81-2
Molecular Weight308.3
Melting Point322 °F (EPA, 1998)
Boiling PointDecomposes (NIOSH, 2024)
DensityRelative density (water = 1): 1.4
Solubility0.002 % (NIOSH, 2024)
AppearanceWarfarin is an odorless and colorless solid. Used as a rodenticide for Norway rats and for house mice. (EPA, 1998)
Also Known As4-hydroxy-3-(3-oxo-1-phenylbutyl)chromen-2-one; 81-81-2; Coumafene; Zoocoumarin; Coumafen; Brumolin; Coumefene; Dethmor; Kumader; Warfarine
CategoryOrganic Compounds

What is Warfarin?

Warfarin can cause developmental toxicity according to an independent committee of scientific and health experts.

Formula & Notation

C19H16O4

IUPAC Name: 4-hydroxy-3-(3-oxo-1-phenylbutyl)chromen-2-one

Other Names / Synonyms: 4-hydroxy-3-(3-oxo-1-phenylbutyl)chromen-2-one; 81-81-2; Coumafene; Zoocoumarin; Coumafen; Brumolin; Coumefene; Dethmor; Kumader; Warfarine

Properties & Characteristics

Appearance: Warfarin is an odorless and colorless solid. Used as a rodenticide for Norway rats and for house mice. (EPA, 1998). Molecular formula: C19H16O4. Molecular weight: 308.3 g/mol. Boiling point: Decomposes (NIOSH, 2024). Melting point: 322 °F (EPA, 1998). Density: Relative density (water = 1): 1.4. Solubility: 0.002 % (NIOSH, 2024). Vapor pressure: 0.09 mmHg at 71 °F (NIOSH, 2024). LogP: 2.7.

Physical Data

PropertyValue
Melting Point322 °F (EPA, 1998)
Boiling PointDecomposes (NIOSH, 2024)
DensityRelative density (water = 1): 1.4
Molecular Weight308.3
Solubility0.002 % (NIOSH, 2024)
AppearanceWarfarin is an odorless and colorless solid. Used as a rodenticide for Norway rats and for house mice. (EPA, 1998)

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Warfarin
Formula C19H16O4
CAS Number 81-81-2
Molecular Weight 308.3
Synonyms 4-hydroxy-3-(3-oxo-1-phenylbutyl)chromen-2-one; 81-81-2; Coumafene; Zoocoumarin; Coumafen; Brumolin; Coumefene; Dethmor; Kumader; Warfarine

Frequently Asked Questions

Warfarin can cause developmental toxicity according to an independent committee of scientific and health experts.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.