Pesticide>> rodenticide >> Warfarin

Description: ISO 1750 (published)
IUPAC: (RS)-4-hydroxy-3-(3-oxo-1-phenylbutyl)coumarin or 3-(α-acetonylbenzyl)-4-hydroxycoumarin
CAS: 81-81-2
Formula: C19H16O4
Activity: rodenticides (coumarin rodenticides)
Notes: The name “coumafène” is used in France, and the name “zoocoumarin” was used in the former USSR.

Structure:

Warfarin PROPERTIES: White, odorless powder. Melting point 159-165°C. Moderately soluble in alcohols.

Warfarin Use: An anticoagulant for controlling Norway rats and house mice. Odorless and tasteless and effective in very low dosages. Action is not rapid; usually about a week is required before a marked reduction in the rodent population is effected. Rodents do not tend to become bait shy after once tasting warfarin; they continue to consume it until its anti-clotting properties have produced death through internal hemorrhaging.

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