6-methylpyrido<3,2-d>pyrimidin-4(3H)-one
2,4-Dioxo-6-methylpyrido<3,2-d>pyrimidine
4-[(2,4-dioxo-1,2,3,4-tetrahydro-pyrido[3,2-d]pyrimidin-6-ylmethyl)-amino]-benzoic acid
4-[(4-oxo-3,4-dihydro-pyrido[3,2-d]pyrimidin-6-ylmethyl)-amino]-benzoic acid
6-methyl-2-phenoxy-pyrido[3,2-d]pyrimidin-4-ylamine