2-(Bromomethyl)-4-(difluoromethyl)-3-methylpyridine-6-acetic acid
2-(Bromomethyl)-4-(difluoromethyl)-3-methylpyridine-5-acetic acid
2-(Bromomethyl)-3-(difluoromethyl)-6-methylpyridine-5-acetic acid
2-(Bromomethyl)-3-(difluoromethyl)-6-methylpyridine-4-acetic acid