1-Ethoxycarbonyl-6-oxo-1,2,3,4-tetrahydro-6H-pyrimido(2,1-b)quinazoline 160776-56-7 2H-Pyrimido(2,1-b)quinazoline-1(6H)-carboxylic acid, 3,4-dihydro-6-oxo-, ethyl ester Ethyl 3,4-dihydro-6-oxo-2H-pyrimido(2,1-b)quinazoline-1(6H)-carboxylate