4-Hydroxy-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-6-carboxylic acid
2-(Fluoromethyl)-4-hydroxy-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
3-(Chloromethyl)-2-hydroxy-6-nitro-5-(trifluoromethoxy)pyridine
2-(Fluoromethyl)-3-hydroxy-6-(trifluoromethoxy)-5-(trifluoromethyl)pyridine