13004-40-5 3-(p-Chlorophenyl)-5,7-dihydroxy-4-oxo-4H-1-benzopyran-2-carboxylic acid ethyl ester 4H-1-BENZOPYRAN-2-CARBOXYLIC ACID, 3-(p-CHLOROPHENYL)-5,7-DIHYDROXY-4-OXO-, ETHY 4H-1-Benzopyran-2-carboxylic acid, 3-(p-chlorophenyl)-5,7-dihydroxy-4-oxo-, ethyl ester BRN 1330473