125055-60-9 4H-Pyrido(1,2-a)pyrimidine-3-carboxamide, N-(1,1-dimethylpropyl)-6-methyl-4-oxo- N-(1,1-Dimethylpropyl)-6-methyl-4-oxo-4H-pyrido(1,2-a)pyrimidine-3-carboxamide N-tert-Pentyl-6-methyl-4-oxo-4H-pyrido(1,2-a)pyrimidine-3-carboxamide