3-Chloro-2-(methoxycarbonyl)-4-nitropyridine 1-oxide
3-Cyano-2-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-(Chloromethyl)-6-(difluoromethyl)-2-methoxypyridine-3-carboxylic acid
5-(Bromomethyl)-2-methyl-4-(trifluoromethoxy)pyridine-3-acetonitrile