Applications

1,3,9-Trimethylxanthine (Isocaffeine) may be used to study the mechanism of inositol-trisphosphate (Ins-P3) induced calcium release. 1,3,9-Trimethylxanthine may be used as an internal standard for measuring metabolites of caffeine in urine and other fluids by HPLC or capillary electrophoresis. 1,3,9-Trimethylxanthine may be used in studies on the binding of caffeine analogues to adenosine receptors.