Erythromycin Stearate:
CAS Number: 643-22-1
Molecular Formula: C37H67NO13.C18H36O2
Usage: Erythromycin Stearate belongs to macrolide antibiotics, and it is the stearic acid salt of erythromycin. It is mainly used in the treatment of the infections of staphylococcus resistant to penicillin and also used in the patients with the infections of streptococcus and pneumococcus.
Certificate Of Analysis: BP2000 Edition
|
Item |
Standard |
Test Result |
|
Characters |
White,crystalline powder |
White,crystalline powder |
|
Identification |
To comply |
Complies |
|
Free stearic acid |
≤14.0%(w/w) |
8.00% |
|
Related substances |
To comply |
Complies |
|
Water |
≤4.0%w/w |
1.90% |
|
Sulphated ash |
≤0.5%w/w |
0.20% |
|
Assay(Erythromycin A.B.C) |
≥60.5% |
69.90% |
|
(Erythromycin B) |
≤5.0% |
1.70% |
|
(Erythromycin C) |
≤5.0% |
3.20% |