4-(Difluoromethyl)-2-nitro-5-(trifluoromethyl)pyridine-3-sulfonyl chloride
4-Amino-3-(difluoromethyl)-5-(trifluoromethyl)pyridine-2-acetic acid
4-(Difluoromethyl)-2-(trifluoromethyl)pyridine-3-sulfonamide
2-Cyano-6-fluoro-3-(trifluoromethoxy)pyridine-5-sulfonamide