• A class of organic compounds containing a benzopyrone (a bicyclic structure of phenyl ring fused to a second-6 member ring that has five carbons, an oxygen atom at the 1 position, and a ketone attachment at the 2 position). Also refers to the simplest coumarin compound H-benzopyran-one (C9H6O2). the chemical structure is C1=CC=C2C(=C1)C=CC(=O)O2.
  CRCH Nutrition Terminology
  Cancer Research Center of Hawaii, University of Hawaii, 2021
• A substance used to make drugs that prevent and treat blood clots in blood vessels and treat certain heart conditions. Coumarin is taken from certain plants and can also be made in the laboratory. It is a type of anticoagulant.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021
• O hydroxycinnamic acid. Pleasant smelling compound found in many plants and released on wilting. Has anticoagulant activity by competing with Vitamin K.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• (alpha benzopyrone) Oxygen containing heterocyclic compound, obtainable naturally from several plants, or produced synthetically from an amino acid of phenylalanine; it is used for the preparation of drugs especially anticoagulants such as bishydroxycoumarin (dicoumarol) and warfarin (coumadin); coumarin glycosides such as dicoumarol and warfarin, are widely used as rodenticides.
  CRISP Thesaurus
  National Institutes of Health, 2006