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