Ethyl 2-amino-5-(difluoromethyl)-3-nitropyridine-4-acetate
3-Amino-6-(difluoromethyl)-2-iodo-4-nitropyridine
Ethyl 2-amino-3-(difluoromethyl)-5-nitropyridine-6-acetate
4-Amino-5-(difluoromethyl)-2-nitro-3-(trifluoromethyl)pyridine
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