Ethyl 5-(difluoromethyl)-3-nitro-4-(trifluoromethyl)pyridine-2-carboxylate
3-(Difluoromethyl)-4-nitro-2-(trifluoromethyl)pyridine-5-sulfonamide
4-(Difluoromethyl)-3-nitro-2-(trifluoromethyl)pyridine-5-carbonyl chloride
4-(Difluoromethyl)-6-nitro-2-(trifluoromethyl)pyridine-3-carboxylic acid