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