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A toxic anticoagulant used in commercial baits to kill rodents. Warfarin, discovered in 1947, is composed of 3(a-acetonylbenzyl)-4-hydroxycoumarin. The chemical is slow-acting material, odorless, tasteless, and works in small doses. The use of warfarin in concentrations above 3% is restricted in the U.S.

Synonyms and Related Terms

3(a-acetonylbenzyl)-4-hydroxycoumarin; d-Con®; RAX; Cov-R-Tox; Kypfarin; Rodex; Tox-Hid

Other Properties

Soluble in water.

Composition C19H16O4

Hazards and Safety

Toxic to all mammals. Slow-acting; works by inhibitng the clotting of blood.

Sources Checked for Data in Record

  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998 Comment: date of discovery and formula