4H-1,4-BENZOXAZINE-4-ACETIC ACID, 6-ACETYL-2,3-DIHYDRO-3-OXO-, ETHYL ESTER 6-Acetyl-2,3-dihydro-3-oxo-4H-1,4-benzoxazine-4-acetic acid ethyl ester 6-Acetyl-4-ethoxycarbonylmethyl-2H-1,4-benzoxazin-3(4H)-one 91119-93-6 BRN 4516341