Lefamulinum Impurity 9 CAS CATO-C4X-30479
| CAS No. | CATO-C4X-30479 |
| Molecular Formula | C28H43NO5S |
| Molecular Weight | 505.71 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Lefamulinum Impurity 9 (CAS CATO-C4X-30479, C28H43NO5S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C28H43NO5S, Lefamulinum Impurity 9 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 505.71 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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), Lefamulinum Impurity 9 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 | C28H43NO5S |
| Molecular Weight | 505.71 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Lefamulinum Standards
- Lefamulinum Impurity 14 (CAS CATO-C4X-304714)
- Lefamulinum Impurity 31 (CAS CATO-C4X-304731)
- Lefamulinum Impurity 23 (CAS CATO-C4X-304723)
- Lefamulinum Impurity 43 (CAS CATO-C4X-304743)
- Lefamulinum Impurity 41 (CAS CATO-C4X-304741)
- Lefamulinum Impurity 15 (CAS CATO-C4X-304715)
- Lefamulinum Impurity 20 (CAS CATO-C4X-304720)
- Lefamulinum Impurity 30 (CAS CATO-C4X-304730)
Recommended Standards
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- Lapatinib Impurity 9 (CAS 1393175-04-6)
- Simvastatin Impurity 20 (CAS CATO-C4X-119920)
- Pitavastatin Impurity 130 (CAS CATO-C4X-1037130)
- Cefazolin Impurity 41 (CAS CATO-C4X-157741)
- Azilsartan Impurity 104 (CAS CATO-C4X-1096104)
- Ranitidine Impurity 21 (CAS 112233-25-7)
- tert-Butyl 4-ethynylpiperidine-1-carboxylate (CAS 287192-97-6)
- Sivelestat Impurity 33 (CAS CATO-C4X-212333)
- 1-(Azetidin-3-yl)-4-isopropylpiperazine (CAS 1339148-54-7)
- N-(pyrrolidin-3-yl)isoquinoline-1-carboxamide hydrochloride (CAS 1417793-08-8)
- 1-Boc-4-(3-Methoxypropylamino)piperidine (CAS 887588-23-0)
- Insulin Degludec Impurity 26 (CAS CATO-C4X-215726)
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