3-Amino-2-(difluoromethyl)-4-nitro-5-(trifluoromethyl)pyridine
6-Amino-2-(difluoromethyl)-4-nitro-3-(trifluoromethyl)pyridine
2-Amino-3-(difluoromethyl)-6-nitro-5-(trifluoromethyl)pyridine
5-Amino-4-(bromomethyl)-2-(difluoromethyl)-3-nitropyridine
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