Ethyl 2-cyano-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-acetate
2-(Difluoromethyl)-5-fluoro-3-(trifluoromethoxy)pyridine-6-carboxylic acid
Methyl 5-cyano-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetate
2-(Difluoromethyl)-3-fluoro-6-(trifluoromethoxy)pyridine-4-carboxylic acid