| 1-β-D-Ribofuranosyl
uracil (UR)
Brief introduction:
Commercial name:UR,English name: 1-β-D-Ribofuranosyl
uracil. 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 used to prevent and cure red
blood cell anaemia,hepatic disease, blood vessel
of brain etc.,is also used as material for producing
S-FC, deoxynucleoside, IDUR, BARD,FUDR.
Physical constant:
| Molecular formula:C9H12N2O6 |
Relative molecular weight:244.20 |
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
|
0.70-0.78 |
0.70-0.78 |
- |
| λ280nm/λ260nm
|
0.31-0.39 |
0.31-0.39 |
- |
3 |
Other nucleoside |
20μlno detection |
15μlno detection |
10μlno detection |
4 |
Range of melting point oC |
162-164 |
161-166 |
161-166 |
5 |
Drying loss ≤% |
1.0 |
1.0 |
2.0 |
6 |
Arsenic(base on As)≤% |
0.0001 |
0.0001 |
0.0001 |
7 |
Heavy metal(base on Pb)≤% |
0.001 |
0.001 |
0.001 |
8 |
Content |
UV method≥% |
98.0 |
98.0 |
96.0 |
| High pressure liquid chromatogram
method≥% |
- |
98.0 |
- |
| Electrophoresis≥% |
- |
- |
90.0 |
9 |
Specific rotation (2% aqueous
solution 25 oC) |
4°±1° |
- |
- |
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. |
