2-Chloro-6-cyano-4-(difluoromethyl)pyridine-3-carboxaldehyde
5-Bromo-2-(difluoromethyl)-3-methylpyridine-6-sulfonyl chloride
Methyl 2-chloro-5-cyano-4-(difluoromethyl)pyridine-3-carboxylate
4-Bromo-3-(difluoromethyl)-6-methylpyridine-2-sulfonyl chloride