4-(methylphenylmethanesulfonylamino)pyridine-2-carboxylic acid methyl ester
4-phenylmethanesulfonylamino-pyridine-2-carboxylic acid methyl ester
4-benzoylaminopyridine-2-carboxylic acid hydroxyamide
4-benzoylaminopyridine-2-carboxylic acid methyl ester
4-(diphenylmethanesulfonylamino)pyridine-2-carboxylic acid methyl ester