4H-Pyrido(1,2-a)pyrimidine-3-carboxamide, 6-methyl-4-oxo-N-(1,1,3,3-tetramethylbutyl)- 6-Methyl-4-oxo-N-(1,1,3,3-tetramethylbutyl)-4H-pyrido(1,2-a)pyrimidine-3-carboxamide N-tert-Octyl-6-methyl-4-oxo-4H-pyrido(1,2-a)pyrimidine-3-carboxamide UV1153512