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