Guanosine

Guanosine
Names
	IUPAC name Guanosine
	Systematic IUPAC name 2-Amino-9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-1,9-dihydro-6H-purin-6-one
	Other names Guanine riboside
Identifiers
CAS Number	118-00-3 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:16750 ;
ChEMBL	ChEMBL375655 ;
ChemSpider	6544 ;
DrugBank	DB02857 ;
ECHA InfoCard	100.003.844
IUPHAR/BPS	4567;
KEGG	C00387 ;
MeSH	Guanosine
PubChem CID	765;
UNII	12133JR80S ;
CompTox Dashboard (EPA)	DTXSID00893055 ;
	InChI InChI=1S/C10H13N5O5/c11-10-13-7-4(8(19)14-10)12-2-15(7)9-6(18)5(17)3(1-16)20-9/h2-3,5-6,9,16-18H,1H2,(H3,11,13,14,19)/t3-,5-,6-,9-/m1/s1 Key: NYHBQMYGNKIUIF-UUOKFMHZSA-N ; InChI=1/C10H13N5O5/c11-10-13-7-4(8(19)14-10)12-2-15(7)9-6(18)5(17)3(1-16)20-9/h2-3,5-6,9,16-18H,1H2,(H3,11,13,14,19)/t3-,5-,6-,9-/m1/s1 Key: NYHBQMYGNKIUIF-UUOKFMHZBU;
	SMILES c1nc2c(=O)[nH]c(nc2n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO)O)O)N;
Properties
Chemical formula	C10H13N5O5
Molar mass	283.241
Appearance	white, crystalline powder
Odor	odorless
Melting point	239 (decomposes)
Magnetic susceptibility (χ)	−149.1·10−6 cm3/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Guanosine (symbol G or Guo) is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N₉-glycosidic bond. Guanosine can be phosphorylated to become guanosine monophosphate (GMP), cyclic guanosine monophosphate (cGMP), guanosine diphosphate (GDP), and guanosine triphosphate (GTP). These forms play important roles in various biochemical processes such as synthesis of nucleic acids and proteins, photosynthesis, muscle contraction, and intracellular signal transduction (cGMP). When guanine is attached by its N9 nitrogen to the C1 carbon of a deoxyribose ring it is known as deoxyguanosine.