6-(Chloromethyl)-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-4-sulfonyl chloride
4-Methoxy-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride
5-(Difluoromethyl)-4-iodo-3-(trifluoromethoxy)pyridine-2-carboxylic acid
5-Iodo-4-nitro-3-(trifluoromethoxy)pyridine-2-carbonyl chloride