2H-1-BENZOPYRAN-6-CARBOXYLIC ACID, 3,4-DIHYDRO-4-(4-(2-METHOXYPHENYL)-1-PIPERAZI 2H-1-Benzopyran-6-carboxylic acid, 3,4-dihydro-4-(4-(2-methoxyphenyl)-1-piperazinyl)-, ethyl ester 81816-74-2 BRN 4597119 Ethyl 3,4-dihydro-4-(4-(2-methoxyphenyl)-1-piperazinyl)-2H-1-benzopyran-6-carboxylate