5-Difluoromethoxy-2-(trifluoromethyl)isonicotinic acid
5-Difluoromethoxy-2-(trifluoromethyl)nicotinic acid
4-Difluoromethoxy-5-(trifluoromethyl)picolinic acid
4-Difluoromethoxy-5-(trifluoromethyl)nicotinic acid
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