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