Ethyl 2-bromo-3-(difluoromethyl)pyridine-4-carboxylate
4-Fluoro-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
3-Amino-2-(chloromethyl)-4-(difluoromethyl)-5-(trifluoromethyl)pyridine
Ethyl 3-(difluoromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-5-carboxylate