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