For the rodenticide class of anticoagulant poisons sometimes loosely referred to as coumadins or coumarins, see 4-hydroxycoumarins.
For the pharmaceutical with the trade name Coumadin, see warfarin.
For the coagulation-inactive perfume agent and defense-chemical in plants which is the synthetic basis for the above chemicals, see coumarin. This compound name is often confused with the others.
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