4-Hydroxy-5-methyl-2-nitro-3-(trifluoromethoxy)pyridine
2-(Aminomethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Hydroxy-5-methoxy-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride
6-Hydroxy-4-methoxy-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride