Methyl 2-(chloromethyl)-3-cyano-5-(difluoromethyl)pyridine-4-acetate
Methyl 5-bromo-4-cyano-3-(trifluoromethoxy)pyridine-2-carboxylate
2-Iodo-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
2-Amino-3-(chloromethyl)-4-(difluoromethyl)-6-fluoropyridine