Competitive price Oxytetracycline Base
1.CAS NO: 79-57-2
2.Color:yellow powder
3.Standard:BP,USP,EP
4.Packing:25kg/drum/bag
Pale yellow to yellow crystal powder.
Melting point of 181-182 °C (breakdown).
Slightly soluble in ethanol, and very slightly soluble in water.
In the air in the stable, in the sun, darker color, alkali solution in easy be destroyed.
Oxytetracycline base
formula :C22H24N2O9
formula weight:460.44
CAS NO :79-57-2
|
Item |
Standard |
|
Description |
Yellow crystalline powder |
|
Identification |
According to BP2007 |
|
PH |
2.3~2.9 |
|
Absorbance(353nm, PH2.0) |
270~290 |
|
Specific optical Rotation |
-188°~ -200° |
|
Heavy metals |
≤50ppm |
|
Light absorbing impurities |
1) Absorbance at 430nm shall not be more than 0.50 2) Absorbance at 490nm shall not be more than 0.20 |
|
Related substances |
Content of impurity peak meets the requirements |
|
Sulfated ash |
≤0.5% |
|
Water |
≤2.0% |
|
HPLC assay |
95.0%~102.0% |
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