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