Methyl 1-(2,5-dimethylphenyl)-2-mercapto-7-methyl-4-oxo-1,4-dihydropyrido[2,3-d]pyrimidine-5-carboxylate 5g

Methyl 1-(2,5-dimethylphenyl)-2-mercapto-7-methyl-4-oxo-1,4-dihydropyrido[2,3-d]pyrimidine-5-carboxylate 5g