2-Bromo-4-(difluoromethyl)-6-methylpyridine-3-carboxaldehyde
5-Bromo-2-(bromomethyl)-3-(difluoromethyl)pyridine-6-carboxylic acid
2-Bromo-4-(difluoromethyl)-3-methylpyridine-5-carboxaldehyde
4-Bromo-5-(bromomethyl)-2-(difluoromethyl)pyridine-3-carboxylic acid