Methyl 4-chloro-2-(difluoromethyl)-3-methoxypyridine-5-carboxylate
2-(Chloromethyl)-3-fluoro-4-iodo-6-(trifluoromethoxy)pyridine
Methyl 3-(difluoromethyl)-5-fluoro-4-nitropyridine-2-carboxylate
Ethyl 4-cyanonicotinate
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