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