Description_x000D_ General description_x000D_ Guanosine is an aromatic organic molecule and a purine nucleoside. It is present in the cerebrospinal fluid, intestinal cells, blood-brain barrier and in brain microvessels._x000D_ Application_x000D_ Guanosine has been used:_x000D_ • as a reference standard for the analysis of glucosinolates by high-performance liquid chromatography with diode-array detection and electrospray ionization tandem mass spectrometry (HPLC-DAD-ESI/MS)_x000D_ • as a component of Mouse Embryonic Fibroblasts (MEFs) culture_x000D_ • as a standard for the detection of residual RNA contaminant in oil palm plant genome samples by HPLC_x000D_ Packaging_x000D_ 1, 25, 100, 500 g in poly bottle_x000D_ Biochem/physiol Actions_x000D_ Guanosine nucleoside elicits cellular effect as the guanine-based purinergic system. It modulates glutamate uptake by glutamate transporters. It may have neuroprotective functionality in central nervous system disorders. Guanosine promotes neurite arborization, outgrowth, proliferation and differentiation. Administration of guanosine replenished GTP and elicits protective function in renal ischemic injury.