122945-77-1 5H-Thiazolo(3,2-a)thieno(2,3-d)pyrimidine-2-carboxylic acid, 3-methyl-5-oxo-7-phenyl-, ethyl ester BRN 6006156 Ethyl 3-methyl-5-oxo-7-phenyl-5H-thiazolo(3,2-a)thieno(2,3-d)pyrimidine-2-carboxylate