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