Methyl 5-amino-1,3-dimethyl-2,4-dioxo-1H,2H,3H,4H-thieno[2,3-d]pyrimidine-6-carboxylate 1g

Methyl 5-amino-1,3-dimethyl-2,4-dioxo-1H,2H,3H,4H-thieno[2,3-d]pyrimidine-6-carboxylate 1g