4-Bromo-5-(difluoromethyl)-3-methylpyridine-2-sulfonyl chloride
4-Bromo-3-(difluoromethyl)-2-methylpyridine-6-sulfonyl chloride
4-Bromo-6-(difluoromethyl)-2-methylpyridine-3-sulfonyl chloride
3-Bromo-6-(difluoromethyl)-2-(trifluoromethyl)pyridine-5-carboxaldehyde