1-(2,5-Dimethylphenyl)-2-mercapto-7-methyl-4-oxo-1,4-dihydropyrido[2,3-d]pyrimidine-5-carboxylic acid 1g

1-(2,5-Dimethylphenyl)-2-mercapto-7-methyl-4-oxo-1,4-dihydropyrido[2,3-d]pyrimidine-5-carboxylic acid 1g