Propranolol Impurity 9 CAS 4662-18-4
| CAS No. | 4662-18-4 |
| Molecular Formula | C17H23NO2 |
| Molecular Weight | 273.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Propranolol Impurity 9 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 273.37 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a process- or degradation-related impurity, Propranolol Impurity 9 (CAS 4662-18-4, C17H23NO2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 Propranolol Impurity 9 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 | C17H23NO2 |
| Molecular Weight | 273.37 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related Propranolol Standards
- Propranolol Impurity 53 (CAS CATO-C4X-151953)
- Propranolol Impurity 58 (CAS CATO-C4X-151958)
- Propranolol Impurity 10 (CAS 27610-48-6)
- Propranolol Impurity 39 (CAS CATO-C4X-151939)
- Rac-Propranolol-d7 (CAS 344298-99-3)
- rac-Propranolol-d7 (CAS 98897-23-5)
- Propranolol Impurity 15 (CAS CATO-C4X-151915)
- Propranolol Impurity 23 (CAS 77252-87-0)
Recommended Standards
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- Norfloxacin Impurity 66 (CAS 58793-80-9)
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- 3-methyl-2-(4-methylphenyl)piperidine (CAS 1019345-69-7)
- 1-Butoxy-3,5-dichloro-2-(propan-2-yloxy)benzene (CAS 1881295-32-4)
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- 2-Fluoro-2-(4-methoxy-2-methylphenyl)acetic acid (CAS 1541023-86-2)
- N1-benzyl-N1-ethyl-2-methylpropane-1,2-diamine (CAS 1082554-22-0)
- (5S)-5-(Aminomethyl)-1,3-oxazolidin-2-one hydrochloride (CAS 2007909-59-1)
- a2,3-Sialylglycopeptide (CAS 189035-43-6)
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