TEST |
STANDARD |
Appearance |
White or slightly yellow,crystalline powder |
Solubility |
Practically insoluble in water, soluble in methylene chloride,Slightly soluble in anhydrous ethanol |
Identification(IR) |
The spectrum must exhibit the maxima only at the same wave numbers as thai of the Vinpocetine CRS similarly prepared |
Specific Optical Rotation |
Between+127 º and +134 º |
Realated Substances |
|
Ethyl vincaminate(A) |
Not more than 0.6% |
Apovincamine(B) |
Not more than 0.5% |
Methoxyvinpocetine(C) |
Not more than 0.3% |
Dihydrovinpocetine(D) |
Not more than 0.5% |
Other single impurity |
Not more than 0.1% |
Total impurity |
Not more than 1.0% |
Loss on drying |
Not more than 0.5% |
Sulphated ash |
Not more than 0.1% |
Assay |
Not less than 98.5% and not more than 101.5% |
Grupos de Producto : API