2H-1-BENZOPYRAN-6-CARBOXYLIC ACID, 3-ACETYL-2-OXO- 3-Acetyl-2-oxo-2H-1-benzopyran-6-carboxylic acid 3-Acetyl-6-carboxycoumarin 5-18-08-00582 (Beilstein Handbook Reference) 6468-73-1 BRN 1380320 SC-358