141234-43-7 Ethyl 1,2,3,5-tetrahydro-5-oxo-1-phenylimidazo(1,2-a)pyrimidine-6-carboxylate Imidazo(1,2-a)pyrimidine-6-carboxylic acid, 1,2,3,5-tetrahydro-5-oxo-1-phenyl-, ethyl ester