Lefamulinum Impurity 23 CAS CATO-C4X-304723
| CAS No. | CATO-C4X-304723 |
| Molecular Formula | C28H45NO5S |
| Molecular Weight | 507.73 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Lefamulinum Impurity 23 (CAS CATO-C4X-304723) is a certified pharmaceutical impurity reference standard with the molecular formula C28H45NO5S and a molecular weight of 507.73 g/mol.
Based on its molecular formula C28H45NO5S, Lefamulinum Impurity 23 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 507.73 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Lefamulinum Impurity 23 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C28H45NO5S |
| Molecular Weight | 507.73 g/mol |
| Purity | ≥90% |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Lefamulinum Standards
- Lefamulinum Impurity 43 (CAS CATO-C4X-304743)
- Lefamulinum Impurity 41 (CAS CATO-C4X-304741)
- Lefamulinum Impurity 14 (CAS CATO-C4X-304714)
- Lefamulinum Impurity 31 (CAS CATO-C4X-304731)
- Lefamulinum Impurity 9 (CAS CATO-C4X-30479)
- Lefamulinum Impurity 15 (CAS CATO-C4X-304715)
- Lefamulinum Impurity 20 (CAS CATO-C4X-304720)
- Lefamulinum Impurity 30 (CAS CATO-C4X-304730)
Recommended Standards
- Tiamulin impurity 13 (CAS 1061337-55-0)
- N-[(1R,2R)-2-(Dimethylamino)cyclohexyl]-N'-[(8α,9S)-6'-methoxycinchonan-9-yl]thiourea (CAS 1101846-75-6)
- Lefamulin (CAS 1061337-51-6)
- (4-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)piperazin-1-yl)(3-(2,6-dichlorophenyl)-4,5-dihydroisoxazol-5-yl)methanone (CAS 477848-50-3)
- Econazole impurity 15 (CAS 57265-33-5)
- Iguratimod Impurity 150 (CAS CATO-C4X-1826150)
- Gadobutrol Impurity N50 (CAS 585531-74-4)
- 4-Nonyl Phenol-glucuronide (CAS 207725-23-3)
- ((2S,4S)-2-((1H-1,2,4-Triazol-1-yl)methyl)-2-(2,4-dichlorophenyl)-1,3-dioxolan-4-yl)methyl 4-methylbenzenesulfonate 113770-65-3 2329AA C20H19Cl2N3O5S (CAS 113770-65-3)
- 2-Chloro-3,5-difluorobenzonitrile (CAS 1261472-31-4)
- 2-(4-(Diethylamino)phenyl)ethanol (CAS 78776-24-6)
- (R)-(-)-Pantoyllactone β-D-glucopyranoside (CAS 171884-77-8)
- 7-Chloro-2-methylquinolin-3-amine (CAS 1297654-74-0)
- Des-Leu26-Tirzepatide (CAS CATO-CPTD788947)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com