Ethyl 3-(bromomethyl)-2-iodo-5-(trifluoromethoxy)pyridine-6-carboxylate
4-(Difluoromethyl)-5-nitro-3-(trifluoromethyl)pyridine-2-sulfonyl chloride
3-(Chloromethyl)-4-(difluoromethyl)-2-methoxy-6-methylpyridine
Methyl 2-cyano-5-(difluoromethyl)-3-methoxypyridine-6-carboxylate