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