Studies of the behavior of 5-hydroxyindole-3-acetamide at a solid electrode

4,4′-Bismoschamine: biomimetic synthesis and evidence to support structural equivalency to montamine

A biomimetic synthesis of 4,4′-bismoschamine enabled comparison of its NMR data to dimeric tryptamines, which supports structural equivalency to montamine.

Electrochemical behaviour of isatin at a glassy carbon electrode

The electrochemical behavior of isatin--a molecule with a broad range of applications in synthetic, biological and clinical activity--has been investigated over a wide pH range at a glassy carbon electrode (GCE) using cyclic, square wave and differential pulse voltammetry. The oxidation of isatin is an irreversible process, pH dependent and occurs with the formation of a main oxidation product that strongly adsorbs on the electrode surface. The reduction of isatin is also a pH dependent irreversible process. Cyclic voltammograms show two consecutive charge transfer reactions. The diffusion coefficient of isatin was calculated in pH 7.0 phosphate buffer to be D(0)=4.9 x 10(-7) cm2 s(-1). The limit of detection obtained in a solution of pH 7.0 phosphate buffer was LOD=0.194 microM, based on three times the noise level.