Items |
Specification |
Results |
|
Appearance |
White or almost white or colorless, fine,silky needles, often in clusters |
Conforms |
|
Solubility |
Soluble in water, freely soluble in ethanol (96%) |
Conforms |
|
Identification | |||
A) TLC |
The principal spot in the chromatogram obtained with the test solution is similar in position,color and size to the principal spot in the chromatogram obtained with the reference solution |
Conforms |
|
B)Bromine and ammonia |
A green color develops when treated with bromine water and dilute ammonia |
Conforms |
|
C) Fluorescence |
When examined in ultraviolet light at 366nm, an intense blue fluorescence appears which disappears almost completely on addition of 1ml of HCL |
Conforms |
|
D) Characteristic of chlorides |
It gives the reactions of chlorides |
Conforms |
|
E) Test for pH |
Should comply |
Conforms |
|
Tests | |||
1) Appearance of solution |
Solution S is clear and not more intensely colored than references solution GY6 |
Conforms |
|
2)PH |
6.0~6.8 |
6.29 |
|
3)Specific optical rotation |
-245° to -258° |
-248.40° |
|
4) Other cinchona alkaloids impurity C Any impurity eluted before quinidine Any other impurity |
≤10% ≤5% sulphates ≤2.5% |
4.16% 0.6% None |
|
5) Loss on drying |
6%~10% |
6.47% |
|
6) Sulphates |
≤500ppm |
Conforms |
|
7) Boron |
Should comply |
Conforms |
|
8)Sulphates ash |
≤0.1% |
0.06% |
|
Assay (on dried basis) |
99.0%~101.0% |
99.66% |
NMT 10ppm |
|
optical rotation |
+168°-+173° |
Grupos de Producto : API