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