2-sulfanylidene-5-thiophen-2-yl-1H-pyrido[2,3-d]pyrimidin-4-one

2-[(4-氨基-1,6-二氢-6-氧代-2-嘧啶)硫代]-乙酸

6-苯胺基-2-硫代尿嘧啶

5,7-dimethyl-2-sulfanylidene-1H-pyrido[2,3-d]pyrimidin-4-one

6-amino-2-prop-2-enylsulfanyl-1H-pyrimidin-4-one