- Melting Point:
- 248 °C
- Physical Description:
- Product Code:
- Product Name:
- Guanosine low endotoxin, pure grade
- Quality Name:
- low endotoxin, pure grade
- Assay (Perchl. Ac.) (calc. a.d.s.): 98.0 - 102.0 %
Minimum assay (HPLC.) (% area): 99.0 %
Identity: IR passes test
Maximum limit of impurities
Appearance: passes test
Appearance of solution: passes test
Residue on ignition (as SO4): 0.2 %
Related Substances (HPLC)
Guanine: 0.3 %
Inosine: 0.2 %
Any individual no specified: 0.25 %
Total: 1.0 %
2-Propanol (G.C.): 5000 ppm
Residual solvents (Ph.Eur/USP): passes test
Bacterial endotoxins: 0.5 IU/mg
Total combined yeast and moulds (TYMC): 100 cfu/g
Total Aerobic Microbial Count (TAMC): 100 cfu/g
Water (H2O): 5 %
Heavy metals (as Pb): 0.001 %
- Hazard pictograms
- Room Temperature.
- Signal Word:
- GHS Symbols:
- H Phrases:
- P Phrases:
- Master Name:
- Synonyms Long Text:
- Vernine, 9-(b-d-Ribofuranosyl) guanine, Guanine-9-b-ribofuranoside
Guanosine is a nucleoside and consists of the nucleic base guanine and the sugar β-D-ribose.
Preparation and extraction
As a component of ribonucleic acids, it can be obtained from them, for example, in yeasts.
Guanosine is a component of ribonucleic acid (RNA), where it forms a base pair with cytidine. The analogue with deoxyribose is deoxyguanosine.
Guanosine is a component of the compounds GTP, GDP, of nucleic acids (RNA, DNA - here the sugar ribose is replaced by deoxyribose) and also a signal molecule.
The compound is present as a dihydrate, which gives off the water of crystallization at 110 °C and above.