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