14736-31-3 2-(Ethoxycarbonyl)chromone 4-Oxo-4H-1-benzopyran-2-carboxylic acid ethyl ester 4H-1-BENZOPYRAN-2-CARBOXYLIC ACID, 4-OXO-, ETHYL ESTER 5-18-08-00312 (Beilstein Handbook Reference) BRN 0178173 Chromone-2-carboxylic acid ethyl ester EINECS 238-797-4 Ethyl 4-oxo-4H-1-benzopyran-2-carboxylate Ethylchromone-2-carboxylate