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