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