4-Hydroxy-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-2-acetic acid
4-Hydroxy-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-acetic acid
3-(Aminomethyl)-2-hydroxy-4-nitro-6-(trifluoromethoxy)pyridine
3-Hydroxy-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-5-acetic acid