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