1932-47-4 6-Benzyl-2-(dibutylamino)-5,6,7,8-tetrahydro-8-methylpyrido(4,3-d)pyrimidin-4-ol Pyrido(4,3-d)pyrimidin-4-ol, 6-benzyl-2-(dibutylamino)-5,6,7,8-tetrahydro-8-methyl-