Ethyl 2-(difluoromethyl)-3-iodo-6-nitropyridine-5-carboxylate
Ethyl 2-(difluoromethyl)-3-iodo-5-nitropyridine-4-carboxylate
Ethyl 2-(difluoromethyl)-3-iodo-6-methylpyridine-5-carboxylate
Methyl 5-(difluoromethyl)-3-iodo-2-nitropyridine-4-carboxylate
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