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