203808-36-0 3-Butyl-1-((2-chlorophenyl)methyl)-5,6-dimethylthieno(2,3-d)pyrimidine-2,4(1H,3H)-dione Thieno(2,3-d)pyrimidine-2,4(1H,3H)-dione, 3-butyl-1-((2-chlorophenyl)methyl)-5,6-dimethyl-