4H-Pyrimido(1,2-b)isoquinoline-3-carboxylic acid, 7,8,9,10-tetrahydro-4-oxo-, ethyl ester 7,8,9,10-Tetrahydro-4-oxo-4H-pyrimido(1,2-b)isoquinoline-3-carboxylic acid ethyl ester 93587-46-3 BRN 5564747