3-Cyano-4-(difluoromethyl)-5-nitro-2-(trifluoromethoxy)pyridine
Methyl 2-cyano-4-nitro-3-(trifluoromethoxy)pyridine-5-acetate
Methyl 2-cyano-3-nitro-5-(trifluoromethoxy)pyridine-6-acetate
4-Cyano-5-nitro-2-(trifluoromethoxy)pyridine-3-acetonitrile
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