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