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