| Customization: | Available |
|---|---|
| Powder: | Yes |
| Customized: | Customized |
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Guanine is one of the four main nucleobases found in the DNA and RNA molecules. It is represented by the letter "G." Guanine pairs with cytosine (C) through hydrogen bonding in DNA and RNA. It is classified as a purine base, along with adenine (A). Guanine is involved in the genetic code and plays a crucial role in the structure and function of DNA and RNA.
Guanine is an organic base that is widespread in the animal and the plant kingdom. The chemical name is 2-amino-6-oxo-purin. It is colorless square crystals or crystalline powder. In the aqueous solution containing a large excess of, it will become small diamond crystal after slowly evaporating the water. It has a melting point of 360 ºC (partially decomposed and sublimated). It can be dissolved in water, and dilute mineral acid, slightly soluble in ethanol, ethyl , and insoluble in water. It has a strong UV absorption. It is the major composition of guanosine and guanylate. Its hydrochloride monohydrate is powdery crystals with water being loss at 100 ºC and hydrogen chloride being loss at 200 ºC. It can be dissolved in acidified water but is insoluble in water, alcohol, and ether. Guanine can be obtained through the hydrolysis of scale in hydrochloric. It is an important base composition of nucleic acids, being one of the four major bases of DNA and RNA as well as the compassion of various kinds of guanylate. Its N9 can be connected with the C1 of ribose or deoxyribose with β-glycosidic bond to obtain guanosine or deoxy-guanosine.
Function:
It can be used for biochemical studies.
It can be used as the intermediates of the antiviral drugs acyclovir.
It can be used as the intermediate of thioguanine and open-ringed guanine.
| Item | Test Standard | Testing Result | |
| Assay | 99% | Complies | |
| Apperence | White Powder | Complies | |
| Particle Size | 100% pass 80 mesh | Complies | |
| Oder | Characteristic | Complies | |
| Taste | Characteristic | Complies | |
| Loss on Drying | ≤5.0% | 2.20% | |
| Residue on Ignition | ≤0.1% | 0.05% | |
| Residual | ≤0.1% | Complies | |
| Residual Ethanol | ≤0.5% | Complies | |
| Heave Mentals | ≤10ppm | Complies | |
| Na | ≤0.1% | <0.1% | |
| Pb | ≤3 ppm | Complies | |
| Total Plate | <1000CFU/g | Complies | |
| Yeast & Mold | <100 CFU /g | Complies | |
| E. Coli | Negative | Complies | |
| Salmonella | Negative | Complies | |
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