Guanosine 5'-triphosphate trisodium salt activates the signal transducing G proteins which are involved in various cellular processes including proliferation differentiation and activation of several intracellular kinase cascades.Proliferation and apoptosis are regulated in part by the hydrolysis of GTP by small GTPases Ras and Rho.

Sphingosine-1-phosphate (S1P) is an agonist for S1P1-5 receptors and a ligand for GPR3, GPR6, and GPR12. As an intracellular second messenger, it mobilizes Ca2+ and acts as an extracellular ligand for G-protein coupled receptors.

5'-Deoxyadenosine is an oxidized nucleoside found in the urine of normal subjects. Oxidized nucleosides represent excellent biomarkers for determining the extent of damage in genetic material which has long been of interest in understanding the mechanism of aging neurodegenerative diseases and carcinogenesis.