Buy Guanine Powder Raw Pharmaceutical Intermediates Online CAS 73-40-5
Guanine Specification
Product Name: Guanine
CAS: 73-40-5
Standard: Enterprise Standard
Level: Pharmaceutical Grade
Content: 99%
Appearance: white powder
Packing: 25KG/cardboard drum
Ingredients: 2-Amino-6-Hydroxypurine
Physicochemical properties: White crystalline or amorphous powder, soluble in acid and alkali, slightly soluble in ethanol, ethyl ether, insoluble in water.
Category: Pharmaceutical Raw Materials
Industry: Pharmaceuticals
Field: Intermediates
Deferred products: Aciclovir Thioguanine, ring-opened guanine
Application: Used as an intermediate for antiviral drugs
What is Guanine?
Guanine is one of the four main nucleobases found in the nucleic acids DNA and RNA, the others being adenine, cytosine, and thymine (uracil in RNA). In DNA, guanine is paired with cytosine. The guanine nucleoside is called guanosine.
With the formula C5H5N5O, guanine is a derivative of purine, consisting of a fused pyrimidine-imidazole ring system with conjugated double bonds. Being unsaturated, the bicyclic molecule is planar.
Guanine Certificate of Analysis
| Product name |
Guanine |
| CAS No. |
73-40-5 |
Outer Packing |
25gk/drum |
| Production date |
2017.11.11 |
Shelf life |
2020.11.10 |
| Standard adopted |
Conform with the Enterprise Standard |
| Items of analysis |
Specification |
Results |
| Appearance |
White to off-white powder |
Comply |
| Indentification |
HPLC/IR |
Comply |
| Solubility |
Soluble in dilute alkali hydroxide |
Comply |
| Loss on drying |
≤1.0% |
0.78% |
| Sulphated ash |
≤0.10% |
0.03% |
| 4-hydroxy-2,5,6-triaminopyrimidine sulphate |
≤0.20% |
0.05% |
| Any other individual impurity |
≤0.20% |
0.03% |
| Total impurities |
≤1.0% |
0.08% |
| Assay(HPLC)C5H5N5O |
98.0~102.0% |
99.6% |
| Storage |
In-house standard(2-8°C) |
2-8°C |
| Conclusion |
Qualified |
