An unidentified base among the hydrolytic products of gelatin

Abstract

Further preparations of the base isolated by Van Slyke and Hiller 1 have been studied. The analyses of the copper salt indicate the composition (C₇H₆O₄N₂)₂ Cu. The substance gives the reactions for a pyrrol group. The ratio of 1:2 for amino N: total N determined by Van Slyke and Hiller is confirmed. The behavior and analyses indicate that it may have the structure of a dihydroxy-pyrrol-alanine.