Ethyl 6-(difluoromethyl)-4-methyl-2-nitropyridine-3-acetate
Ethyl 3-(difluoromethyl)-4-methoxy-2-nitropyridine-6-carboxylate
Ethyl 3-(difluoromethyl)-2-methoxy-6-nitropyridine-5-carboxylate
Ethyl 2-(difluoromethyl)-4-methyl-3-nitropyridine-6-acetate
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