Propranolol Impurity 7 CAS 34646-56-5
| CAS No. | 34646-56-5 |
| Molecular Formula | C13H14O3 |
| Molecular Weight | 218.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Propranolol Impurity 7 (C13H14O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 218.25 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a process- or degradation-related impurity, Propranolol Impurity 7 (CAS 34646-56-5, C13H14O3) 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C13H14O3 |
| Molecular Weight | 218.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
Related Propranolol Standards
- Propranolol EP Impurity A (CAS 36112-95-5)
- Propranolol Impurity N5 (CAS 20862-11-7)
- Propranolol Impurity 19 (CAS 62618-09-1)
- Propranolol Impurity 29 (CAS 20862-12-8)
- Propranolol Impurity 12 (CAS 13917-61-8)
- Propranolol Impurity 16 (CAS 5234-06-0)
- Propranolol Impurity 56 (CAS CATO-C4X-151956)
- Propranolol Impurity 59 (CAS CATO-C4X-151959)
Recommended Standards
- Paliperidone Impurity 165 (CAS CATO-C4X-1724165)
- Glycopyrrolate Impurity 5 (CAS 1404453-63-9)
- (Z)-Cilnidipine Impurity 16 (CAS CATO-C4X-179616)
- Ketoconazole Impurity 15 (CAS 581806-59-9)
- Orforglipron impurity 134 (CAS CATO-C4X-3234134)
- Azithromycin EP Impurity Q (CAS 2095879-65-3)
- Peramivir impurity 120 (CAS CATO-C4X-1833120)
- 5-Dodecanoylaminoflorescein di-β-D-galactopyranoside (CAS 138777-25-0)
- 4'-(2-(2-(2-Methoxyethoxy)ethoxy)ethoxy)-[1,1'-biphenyl]-4-ol (CAS 178873-86-4)
- 6-(Propane-2-sulfonamido)pyridine-3-carboxylic acid (CAS 1249354-43-5)
- 4-Methyl-3-(2-methylbenzenesulfonyl)-2-[(2-methylprop-2-en-1-yl)oxy]-6-phenylpyridine (CAS 344278-79-1)
- 4,6-Bis((R)-4-benzyl-4,5-dihydrooxazol-2-yl)dibenzo[b,d]furan (CAS 1080596-47-9)
- 7-(4-Iodophenyl)-7-oxoheptanenitrile (CAS 898767-88-9)
- Semaglutide impurity 261 (CAS CATO-C4X-2226261)
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