6-carbomethoxy-2,4,8-trioxopyrido[3,2-d]pyrimidine

dimethyl 2-((2,4-dioxopyrimidin-5-yl)amino)fumarate

6-methoxycarbonyl-2,4-dimethoxypyrido<3,2-d>pyrimidine

{2,4-二羟基吡啶并[3,2-d]嘧啶-6-基}甲基乙酸酯

2,4-Dioxo-6-methylpyrido[3,2-d]pyrimidine 5-Oxide