抄録
It was ascertained that riboflavin interacted with several indoles to form 1:1 complex in acid solution, and the formation of the complex was due to charge transfer forces judging from the absorption spectra. Charge transfer forces seemed to be very weak for the stabilization of the complexes. It was found that in relation to the solvent effect on stable complex formation, the extent of polarity as well as the acidity of the solvent was closely involved.
