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