2,6-dichloro-7,9-dihydro-purin-8-one

6-羟基二氢-2,4,5(3H)-嘧啶三酮

N,N-二甲基脲

methyl-(6-methylamino-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl)-carbamic acid ethyl ester

草酸