Synonyms: 5H-Thiazolo[3,2-a]pyrimidine-6-carboxylic acid, 5-(3,4-dimethoxyphenyl)-2,3-dihydro-2-[(4-hydroxy-3-methoxyphenyl)methylene]-7-methyl-3-oxo-, ethyl ester, (2Z)-;Ethyl (2Z)-5-(3,4-dimethoxyphenyl)-2-(4-hydroxy-3-methoxybenzylidene)-7-methyl-3-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate