Ethyl 2-((1-ethyl-5,7-dimethyl-4-oxo-1,4-dihydropyrido[2,3-d]pyrimidin-2-yl)thio)acetate 1g

Ethyl 2-((1-ethyl-5,7-dimethyl-4-oxo-1,4-dihydropyrido[2,3-d]pyrimidin-2-yl)thio)acetate 1g