Clindamycin Impurity 13 CAS 147650-54-2
| CAS No. | 147650-54-2 |
| Molecular Formula | C21H37ClN2O5S |
| Molecular Weight | 465.05 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Clindamycin Impurity 13 (C21H37ClN2O5S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Clindamycin Impurity 13 (CAS 147650-54-2) is a certified pharmaceutical impurity reference standard with the molecular formula C21H37ClN2O5S and a molecular weight of 465.05 g/mol.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Clindamycin Impurity 13 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C21H37ClN2O5S |
| Molecular Weight | 465.05 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Clindamycin Standards
- Clindamycin Impurity 144 (CAS CATO-C4X-1341144)
- Clindamycin Impurity 152 (CAS CATO-C4X-1341152)
- Clindamycin Impurity 34 (CAS CATO-C4X-134134)
- Clindamycin Impurity 145 (CAS CATO-C4X-1341145)
- Clindamycin Impurity 82 (CAS CATO-C4X-134182)
- Clindamycin Impurity 84 (CAS CATO-C4X-134184)
- Clindamycin Impurity 85 (CAS CATO-C4X-134185)
- Clindamycin Impurity 20 (CAS CATO-C4X-1341120)
Recommended Standards
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