6-Hydroxy-2-nitro-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
5-Hydroxy-4-nitro-2-(trifluoromethoxy)pyridine-3-carboxylic acid
Ethyl 2-hydroxy-5-methoxy-3-(trifluoromethoxy)pyridine-6-carboxylate
2-Hydroxy-6-nitro-4-(trifluoromethoxy)pyridine-3-carboxaldehyde