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