1H-1,5-Benzodiazepine-1-carboxylic acid, 2,3,4,5-tetrahydro-2-methyl-4-oxo-, ethyl ester 98987-10-1 Ethyl 2,3,4,5-tetrahydro-2-methyl-4-oxo-1H-1,5-benzodiazepine-1-carboxylate