3-(Difluoromethyl)-6-nitro-2-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-5-nitro-2-(trifluoromethoxy)pyridine
5-Methoxy-4-(trifluoromethoxy)pyridine-2-acetic acid
4-(Difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine
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