3,5-Difluoro-2-(trifluoromethoxy)pyridine-6-sulfonamide
5-(Difluoromethyl)-3-nitro-2-(trifluoromethoxy)pyridine
5-(Difluoromethyl)-4-nitro-2-(trifluoromethoxy)pyridine
2-Nitro-3-(trifluoromethoxy)pyridine-6-carboxylic acid
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