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