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