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