Ethyl 5-cyano-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-3-acetate
Ethyl 4-cyano-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-3-acetate
2-Cyano-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-5-acetic acid
Ethyl 4-cyano-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-2-acetate