2-(Difluoromethyl)-3-hydroxy-5-nitropyridine-6-sulfonamide
2-Bromo-5-fluoro-6-(trifluoromethoxy)pyridine-3-sulfonamide
3-Nitro-5-(trifluoromethoxy)pyridine-4-carboxamide
2-(Bromomethyl)-3-(difluoromethyl)-6-hydroxy-5-(trifluoromethyl)pyridine
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