3-Hydroxy-2-nitro-6-(trifluoromethoxy)pyridine-5-carboxylic acid
2-Hydroxy-4-nitro-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-Hydroxy-2-nitro-5-(trifluoromethoxy)pyridine-4-carboxylic acid
6-Hydroxy-2-nitro-3-(trifluoromethoxy)pyridine-4-carboxylic acid