Description: The material shall consist of warfarin together with related manufacturing impurities and shall be in the form of colourless crystals, free from visible extraneous matter and added modifying agents.
Chemical Name (IUPAC): (RS)-4-hydroxy-3-(3-oxo-1-phenylbutyl)coumarin
CAS No: 81-81-2 (old CAS numbers 56573-89-8, 5543-56-6)
Use: Anticoagulant, rodenticide
Molecular formula: C19H16O4
Melting point: 161 - 162 C
Boiling point: Decomposes
Density (g cm-3):
Water solubility: 1.7 mg/100 ml at 20 C
Stable. Incompatible with strong oxidizing agents.
Very toxic if swallowed or inhaled. Causes internal hemorrhage. Toxic if absorbed through the skin. May act as a teratogen.
(The meaning of any toxicological abbreviations which appear in this section is given here. )
ORL-RAT LD50 3 mg kg-1 to 186 mg kg-1
SKN-RAT LD50 1400 mg kg-1
ORL-MUS LD50 60 mg kg-1
ORL-HMN LDLO 7 mg kg-1
ORL-MUS LD50 374 mg kg-1