| 1-β-D-Ribofuranosyl
cytidine(CR)
Brief introduction:
Commercial name:CR. English name:1-β-D-Ribofuranosyl
cytidine. Products of top grade are white crystalline
powder or similar to white crystalline powder,qualified
products are faint yellow crystalline powder or
crystalline grain.
This product, the material of which is ribonucleic
acid, is easily soluble in water, pyridine,insoluble
in alcohol.
This product is mainly used as main material
for producing Ara-CR, CTP, Cytidine.
Physical constant:
| Molecular formula:C9H13N3O5 |
Relative molecular weight:243.23 |
Structural formula:
Technical indicators:
| Sequence
number |
Index
name |
Index |
| Biochemical
reagent grade |
Top grade |
Qualified
products |
1 |
Appearance |
White crystalline powder |
White or similar to white crystalline
powder |
Faint yellow crystalline powder
or crystalline grain |
2 |
Authenti-cation
|
Electrophoresis
position |
In accordance with |
In accordance with |
In accordance with |
| Ultraviolet absorbency
ratio |
λ250nm/λ260nm |
0.40-0.50 |
0.40-0.50 |
- |
| λ280nm/λ260nm
|
2.05-2.15 |
2.05-2.15 |
- |
3 |
Other nucleoside |
20μlno detection |
15μlno detection |
10μlno detection |
4 |
Drying loss≤% |
1.0 |
1.0 |
2.0 |
5 |
Arsenic(base on As)≤% |
0.0001 |
0.0001 |
0.0001 |
6 |
Heavy metal(base on Pb)≤% |
0.001 |
0.001 |
0.001 |
7 |
Content |
UV method≥% |
98.0 |
98.0 |
95.0 |
| High pressure liquid chromatogram
method≥% |
- |
98.0 |
- |
| Electrophoresis ≥% |
- |
- |
90.0 |
| 8 |
Specific rotation(0.7% aqueous
solution 25oC) |
+31°±2° |
- |
- |
Packaging:packed in cardboard drum
(with two layers of polyethylene film plastic
bag),NW:20kg
Storage:stored in draughty, dry and clean
place,shelf life: 3 years since the
production date.
|
