Ethyl 3-hydroxy-4-nitro-2-(trifluoromethoxy)pyridine-6-carboxylate
3-(Aminomethyl)-6-hydroxy-4-methyl-2-(trifluoromethoxy)pyridine
Ethyl 3-hydroxy-2-nitro-6-(trifluoromethoxy)pyridine-4-carboxylate
2-Fluoro-3-(fluoromethyl)-6-(trifluoromethoxy)pyridine-5-carboxylic acid