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