3-(Difluoromethyl)-6-nitro-2-(trifluoromethyl)pyridine-4-acetic acid
4-(Difluoromethyl)-5-nitro-2-(trifluoromethyl)pyridine-3-acetic acid
4,5-Bis(2-(trifluoromethyl)phenyl)-3-(trifluoromethyl)pyridine
2,5-Bis(4-(trifluoromethyl)phenyl)-4-(trifluoromethyl)pyridine