Clemastine EP Impurity A(Mixture of Diastereomers) CAS 108825-05-4
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 108825-05-4 |
| Molecular Formula | C21H26ClNO2 |
| Molecular Weight | 359.89 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Clemastine EP Impurity A(Mixture of Diastereomers) (CAS 108825-05-4) is a pharmacopoeial impurity standards certified reference material from CATO. Molecular formula: C21H26ClNO2. Molecular weight: 359.89 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C21H26ClNO2 |
| Molecular Weight | 359.89 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Clemastine Standards
- Clemastine Impurity 24 (CAS CATO-C4X-183724)
- Clemastine Impurity 14 (CAS CATO-C4X-183714)
- Clemastine Impurity 33 (CAS CATO-C4X-183733)
- rac-Clemastine Fumarate EP Impurity B (CAS 61771-18-4)
- Clemastine Impurity 15 (CAS CATO-C4X-183715)
- Clemastine Impurity 16 (CAS CATO-C4X-183716)
- Clemastine EP Impurity B (CAS 1352549-49-5)
- Clemastine Impurity 21 (CAS CATO-C4X-183721)
Recommended Standards
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- Ursodeoxycholic Acid impurity 72 (CAS 2168516-46-7)
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- 1-(5-Bromo-2-methoxyphenyl)propan-1-one (CAS 502924-41-6)
- (13Z)-β-Carotene (CAS CATO-CCFD201214)
- 1-Methyl-1,2,3,6-tetrahydropyridine (CAS 694-55-3)
- Semaglutide impurity 290 (CAS CATO-C4X-2226290)
Why CATO?
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