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