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