2-Amino-6-nitro-3-(trifluoromethoxy)pyridine-5-sulfonamide
6-Amino-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonamide
2-Amino-5-nitro-3-(trifluoromethoxy)pyridine-6-sulfonamide
6-Amino-3-(difluoromethyl)-4-nitro-2-(trifluoromethoxy)pyridine
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