4-Trifluoromethylthiazole-2-carboxylic acid ethyl ester , its cas register number is 79247-86-2. It also can be called 2-Thiazolecarboxylicacid, 4-(trifluoromethyl)-, ethyl ester ; Ethyl 4-(trifluoromethyl)thiazole-2-carboxylate .