2-Phenyl-5-(trifluoromethyl)nicotinic acid
3,4-Bis(trifluoromethyl)-5-(difluoromethyl)pyridine
6-Phenyl-4-(trifluoromethyl)nicotinic acid
2,6-Bis(trifluoromethyl)-4-(difluoromethyl)pyridine
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