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