3-Cyano-2-(difluoromethyl)-4-nitropyridine-5-acetic acid
6-Cyano-3-(difluoromethyl)-4-nitropyridine-2-acetic acid
Ethyl 2-cyano-6-(difluoromethyl)-3-nitropyridine-4-acetate
Ethyl 2-cyano-4-(difluoromethyl)-3-nitropyridine-5-acetate
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