Ethyl 5-cyano-3-fluoro-4-(trifluoromethoxy)pyridine-2-acetate
Ethyl 3-cyano-5-fluoro-2-(trifluoromethoxy)pyridine-4-acetate
3-(Difluoromethyl)-4-fluoro-2-methoxy-6-(trifluoromethoxy)pyridine
Ethyl 3-cyano-4-fluoro-2-(trifluoromethoxy)pyridine-5-acetate