N-Ethylcarbazole Impurity 3 CAS 56166-63-3
| CAS No. | 56166-63-3 |
| Molecular Formula | C14H12BrN |
| Molecular Weight | 274.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C14H12BrN, N-Ethylcarbazole Impurity 3 contains a nitrogen-containing heterocyclic scaffold, a nitrile group, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 274.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies N-Ethylcarbazole Impurity 3 (CAS 56166-63-3), a pharmacopoeial impurity reference standard (molecular formula C14H12BrN, MW 274.16 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
As a certified reference material (CRM), N-Ethylcarbazole Impurity 3 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.
Physical & Chemical Properties
| Molecular Formula | C14H12BrN |
| Molecular Weight | 274.16 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related N Standards
- N-Ethylcarbazole Impurity 2 (CAS 57102-97-3)
- N-Ethylcarbazole Impurity 6 (CAS CATO-C4X-30406)
- N-Ethylcarbazole Impurity 5 (CAS CATO-C4X-30405)
- N-Ethylcarbazole Impurity 1 (CAS 1088098-21-8)
- 9-Ethylcarbazole-3-carboxylic acid (CAS 57102-98-4)
- 9-Ethylcarbazole-3-carboxaldehydeN-Methyl-N-phenylhydrazone (CAS 75232-44-9)
- N-Ethylcarbazole Impurity 4 (CAS 882883-55-8)
- 3-Ethylcarbazole (CAS 5599-49-5)
Recommended Standards
- diethyl 2,2,4,4-tetrafluoro-3-oxopentanedioate (CAS 1001383-52-3)
- 2-((5-bromopyrazin-2-yl)oxy)-N,N-diethylethan-1-amine 446287-01-0 [2-(5-Bromo-pyrazin-2-yloxy)ethyl]diethylamine (CAS 446287-01-0)
- n-(3-Bromo-4-fluorobenzyl)-3-methylbutan-1-amine (CAS 1019478-64-8)
- Perfluorophenyl ethenesulfonate (CAS 452905-58-7)
- Conjugated Estrogens EP Impurity G(Stabilzed with up to 40% Tromethamine) (CAS 61612-83-7)
- Carvedilol EP Impurity A (CAS 1198090-73-1)
- Ranitidine EP Impurity C (CAS 73851-70-4)
- Perfluoropentanesulfonyl fluoride (CAS 375-81-5)
- N-(3-Methoxypropyl)-4-(2-phenylacetyl)-1H-pyrrole-2-carboxamide (CAS 477870-54-5)
- Atrasentan Impurity 150 (CAS 1058402-39-3)
- Lithium ion carrier VI (CAS 106868-21-7)
- 2-Bromo-3-(bromomethyl)-5-(difluoromethyl)-6-methylpyridine (CAS 1806873-54-0)
- N-mesityl-2-((3-methyl-4-oxo-7-phenyl-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide (CAS 1040632-55-0)
- Semaglutide impurity 47 (CAS CATO-C4X-222647)
Why CATO?
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