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