5-(Difluoromethyl)-3-nitro-4-(trifluoromethoxy)pyridine-2-acetic acid
5-(Difluoromethyl)-4-nitro-3-(trifluoromethoxy)pyridine-2-acetic acid
2-(Difluoromethyl)-6-nitro-3-(trifluoromethoxy)pyridine-4-acetic acid
2-(Aminomethyl)-3-methyl-6-(trifluoromethoxy)-5-(trifluoromethyl)pyridine