1,5-Benzothiazepine-2-acetic acid, 2,3,4,5-tetrahydro-4-oxo-, methyl ester 86628-26-4 BRN 4485817 Methyl 2,3,4,5-tetrahydro-5-oxo-1,4-benzothiazepine-2-acetate Methyl 2,3-dihydro-1,5-benzothiazepin-5(4H)-one-2-acetate