Methyl 3,6-dibromo-2-(difluoromethyl)pyridine-4-acetate
Ethyl 5-(difluoromethyl)-3-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 6-(difluoromethyl)-2-(trifluoromethyl)pyridine-3-carboxylate
Ethyl 2-(difluoromethyl)-3-(trifluoromethyl)pyridine-6-carboxylate