Ethyl 6-(chloromethyl)-3-(difluoromethyl)pyridine-2-carboxylate
Methyl 2-fluoro-3-methyl-6-(trifluoromethoxy)pyridine-4-carboxylate
2-Amino-3-(difluoromethyl)-6-iodopyridine-4-sulfonamide
3-Chloro-2-(difluoromethyl)-4-hydroxypyridine-6-sulfonyl chloride