2-Chloro-4-(difluoromethyl)-5-nitro-3-(trifluoromethoxy)pyridine
5-Chloro-3-methyl-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-Chloro-3-(difluoromethyl)-5-nitro-4-(trifluoromethoxy)pyridine
3-Chloro-5-methyl-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride