5-Chloro-3-nitro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Chloro-5-nitro-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-Bromo-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-acetic acid
5-Chloro-4-nitro-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride