2-aminochromeno[4,3-d]pyrimidin-5-one

5-氯-1,2,3-噻二唑-3-胺

4-(4-nitrophenyl)-6-phenylpyrimidin-2-amine

(2-aminopyrimidin-5-yl)-(2-hydroxyphenyl)methanone

2-[4-(trichloromethyl)pyrimidin-2-yl]guanidine