产品描述:
Guanine-15N5 is intended for use as an internal standard for the quantification of guanine (Item No. 34248) by GC- or LC-MS. Guanine is a purine base.{54328} It forms complementary base pairs with the pyrimidine cytosine in DNA and RNA. Guanine can be linked to ribose via a β-N9-glycosidic bond to form the purine nucleoside guanosine (Item No. 27702), which can be phosphorylated to guanine-based purines that have numerous roles in intracellular signal transduction.{61563,61564}