5-(Chloromethyl)-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-sulfonyl chloride
3-(Chloromethyl)-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-6-sulfonyl chloride
3-(Difluoromethyl)-2-methoxypyridine-4-sulfonyl chloride
Ethyl 3-(chloromethyl)-4-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-acetate