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