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