Methyl 2-bromo-4-(difluoromethyl)-5-methylpyridine-3-carboxylate
Methyl 2-bromo-4-(difluoromethyl)-3-methylpyridine-5-carboxylate
Methyl 2-bromo-3-(difluoromethyl)-6-methylpyridine-4-carboxylate
Ethyl 5-bromo-3-(bromomethyl)-4-(difluoromethyl)pyridine-2-carboxylate