Methyl 4-(difluoromethyl)-3-(trifluoromethyl)pyridine-5-acetate
Ethyl 4-(difluoromethyl)-2-(trifluoromethyl)pyridine-5-carboxylate
Ethyl 3-(difluoromethyl)-5-(trifluoromethyl)pyridine-4-carboxylate
Methyl 4-(difluoromethyl)-2-(trifluoromethyl)pyridine-5-acetate