Propranolol Impurity 31 CAS CATO-C4X-151931
| CAS No. | CATO-C4X-151931 |
| Molecular Formula | C16H21NO2 |
| Molecular Weight | 259.34 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Propranolol Impurity 31 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Propranolol Impurity 31 (CAS CATO-C4X-151931) is a certified pharmaceutical impurity reference standard with the molecular formula C16H21NO2 and a molecular weight of 259.34 g/mol.
Structurally, Propranolol Impurity 31 (C16H21NO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. 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 259.34 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C16H21NO2 |
| Molecular Weight | 259.34 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 |
| Nitrogen Atoms | 1 |
Related Propranolol Standards
- (S)-Propranolol, 98% (CAS 4199-09-1)
- Propranolol Impurity 30 (CAS 27827-19-6)
- Propranolol Impurity 49 (CAS CATO-C4X-151949)
- Propranolol Impurity 5 (CAS 2007-72-9)
- Propranolol Impurity 52 (CAS CATO-C4X-151952)
- Propranolol Impurity 54 (CAS CATO-C4X-151954)
- Propranolol (CAS 525-66-6)
- Propranolol Impurity 15 (CAS CATO-C4X-151915)
Recommended Standards
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- Thiamine /Vitamin B1 Impurity 20 (CAS 73-67-6)
- Olopatadine impurity 147 (CAS CATO-C4X-1135147)
- Alectinib Impurity 49 (CAS CATO-C4X-283649)
- (3-(6-Chloro-1H-indol-1-yl)phenyl)methanol (CAS 1349717-47-0)
- 1-(2-(3-Bromophenoxy)ethyl)piperazine dihydrochloride (CAS 1193388-83-8)
- (2-(Piperidin-1-ylmethyl)phenyl)methanol (CAS 91271-61-3)
- 2-Chloro-N-(3-fluorophenyl)isonicotinamide (CAS 1019323-09-1)
- 2-((2-Chlorobenzyl)oxy)-1-naphthaldehyde (CAS 710296-47-2)
- 1-(2-Fluoro-4-(trifluoromethyl)phenyl)ethanamine (CAS 1098068-03-1)
- Q-Peptide trifluoroacetate salt (CAS 1361235-89-3)
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