Clemastine Impurity 15 CAS CATO-C4X-183715
| CAS No. | CATO-C4X-183715 |
| Molecular Formula | C21H26ClNO |
| Molecular Weight | 343.89 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 343.89 g/mol gives Clemastine Impurity 15 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Clemastine Impurity 15 (CAS CATO-C4X-183715), a pharmacopoeial impurity reference standard (molecular formula C21H26ClNO, MW 343.89 g/mol) used for the identification and quantification of trace impurities in APIs.
Clemastine Impurity 15 (C21H26ClNO) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Clemastine Impurity 15 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 | C21H26ClNO |
| Molecular Weight | 343.89 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Clemastine Standards
- rac-Clemastine Fumarate EP Impurity B (CAS 61771-18-4)
- Clemastine Impurity 16 (CAS CATO-C4X-183716)
- Clemastine EP Impurity B (CAS 1352549-49-5)
- Clemastine Impurity 21 (CAS CATO-C4X-183721)
- Clemastine Impurity 22 (CAS CATO-C4X-183722)
- Clemastine (CAS 15686-51-8)
- Clemastine Impurity 33 (CAS CATO-C4X-183733)
- Clemastine Impurity 32 (CAS CATO-C4X-183732)
Recommended Standards
- Sertraline Impurity 63 (CAS CATO-C4X-134463)
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- Sertraline Impurity 60 (CAS CATO-C4X-134460)
- Rupatadine impurity 32 (CAS CATO-C4X-102732)
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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