Synonyms: 5H-thiazolo[3,2-a]pyrimidine-6-carboxylic acid, 2,3-dihydro-2-[(2-methoxy-1-naphthalenyl)methylene]-7-methyl-3-oxo-5-(2-thienyl)-, ethyl ester, (2Z)-;Ethyl (2Z)-2-[(2-methoxy-1-naphthyl)methylene]-7-methyl-3-oxo-5-(2-thienyl)-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate