Methyl 2-bromo-5-cyano-6-(difluoromethyl)pyridine-3-carboxylate
5-Bromo-2-(difluoromethyl)-3-hydroxypyridine-4-sulfonamide
Methyl 6-bromo-3-cyano-4-(difluoromethyl)pyridine-2-carboxylate
Methyl 2-bromo-5-cyano-3-(difluoromethyl)pyridine-6-carboxylate