Synonyms: 5H-thiazolo[3,2-a]pyrimidine-6-carboxylic acid, 2,3-dihydro-7-methyl-2-[[3-(4-methylphenyl)-1-phenyl-1H-pyrazol-4-yl]methylene]-3-oxo-5-phenyl-, ethyl ester, (2Z)-;Ethyl (2Z)-7-methyl-2-{[3-(4-methylphenyl)-1-phenyl-1H-pyrazol-4-yl]methylene}-3-oxo-5-phenyl-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate