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