英文别名3-Oxo-3,4-dihydro-2H-benzo[1,4]oxazine-5-carboxylic acid methyl ester; 2H-1,4-Benzoxazine-5-carboxylic acid, 3,4-dihydro-3-oxo-, methyl ester; methyl 3-oxo-4H-1,4-benzoxazine-5-carboxylate; methyl 3-oxo-3,4-dihydro-2H-1,4-benzoxazine-5-carboxylate; 3,4-DIHYDRO-3-OXO-2H-1,4-BENZOXAZINE-5-CARBOXYLIC ACID METHYL ESTER 
