Propranolol Impurity 13 CAS 1236367-67-1
| CAS No. | 1236367-67-1 |
| Molecular Formula | C26H26O5 |
| Molecular Weight | 418.48 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Propranolol Impurity 13 is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Propranolol Impurity 13 (CAS 1236367-67-1) is a certified pharmaceutical impurity reference standard with the molecular formula C26H26O5 and a molecular weight of 418.48 g/mol.
Owing to a steroid core, a hydroxyl group, an ether linkage, Propranolol Impurity 13 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 418.48 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C26H26O5 |
| Molecular Weight | 418.48 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
Related Propranolol Standards
- Propranolol Impurity 50 (CAS CATO-C4X-151950)
- Propranolol Impurity 32 (CAS CATO-C4X-151932)
- Propranolol Impurity 33 (CAS CATO-C4X-151933)
- Propranolol Impurity 34 (CAS CATO-C4X-151934)
- Propranolol Impurity 35 (CAS CATO-C4X-151935)
- Propranolol Impurity 40 (CAS CATO-C4X-151940)
- Propranolol Impurity 41 (CAS CATO-C4X-151941)
- Propranolol Impurity 42 (CAS CATO-C4X-151942)
Recommended Standards
- Budesonide Impurity 65 (CAS 2451560-12-4)
- Eplerenone Impurity 13 (CAS 1621954-05-9)
- Flunarizine impurity 34 (CAS CATO-C4X-135734)
- Prednisolone Impurity 49 (CAS CATO-C4X-173749)
- Apixaban Impurity 101 (CAS 2219376-48-2)
- Limaprost Impurity 13 (CAS CATO-C4X-214513)
- Bempedoic Acid Impurity 26 (CAS CATO-C4X-218926)
- 3H-Indol-3-one, 5-bromo-2-(5-bromo-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- (CAS 84-40-2)
- (S)-tert-Butyl 2-((tert-butoxycarbonyl)amino)-5-(4-methoxyindolin-1-yl)-5-oxopentanoate (CAS 314760-11-7)
- N2,N7-Diphenyl-N2,N7-di-m-tolyl-9,9'-spirobi[fluorene]-2,7-diamine (CAS 1033035-83-4)
- Methyl 4-(N-(2-cyclopropyl-2-hydroxypropyl)sulfamoyl)benzoate (CAS 1396812-55-7)
- 3-(2-Methoxyethyl)-5,7-dimethylbenzo[d]thiazol-2(3H)-imine 4-methylbenzenesulfonate (CAS 2034157-21-4)
- 1-(2-Cyanoethyl)-1h-pyrazole-4-carboxamide (CAS 1394041-54-3)
- Semaglutide impurity 261 (CAS CATO-C4X-2226261)
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