Ethyl 4-bromo-2-(difluoromethyl)-3-fluoropyridine-6-carboxylate
2-Bromo-6-cyano-3-(difluoromethyl)pyridine-4-sulfonyl chloride
Ethyl 5-bromo-3-(difluoromethyl)-2-fluoropyridine-4-carboxylate
6-Bromo-3-cyano-2-(difluoromethyl)pyridine-4-sulfonyl chloride