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