5-(Chloromethyl)-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-6-sulfonyl chloride
5-(Bromomethyl)-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride
Methyl 6-(chloromethyl)-2-cyano-4-(trifluoromethoxy)pyridine-3-carboxylate
6-(Difluoromethyl)-2-methyl-4-nitropyridine-3-sulfonyl chloride