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