Chlorphenamine EP Impurity C CAS 20619-12-9
| CAS No. | 20619-12-9 |
| Molecular Formula | C15H17ClN2 |
| Molecular Weight | 260.76 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 260.76 g/mol gives Chlorphenamine EP Impurity C distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Chlorphenamine EP Impurity C (CAS 20619-12-9) is a certified pharmaceutical impurity reference standard with the molecular formula C15H17ClN2 and a molecular weight of 260.76 g/mol.
Structurally, Chlorphenamine EP Impurity C (C15H17ClN2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 260.76 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.
As a certified reference material (CRM), Chlorphenamine EP Impurity C 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 | C15H17ClN2 |
| Molecular Weight | 260.76 g/mol |
| Purity | >80% |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorphenamine Standards
- Chlorphenamine impurity 53 (CAS CATO-C4X-118853)
- Chlorphenamine Impurity 27 (CAS 339114-86-2)
- Chlorphenamine Impurity 31 (CAS 872811-44-4)
- Chlorphenamine Impurity 30 (CAS 71486-42-5)
- Chlorphenamine Impurity 71 (CAS CATO-C4X-118871)
- Chlorphenamine Impurity 19 (CAS 73486-85-8)
- Chlorphenamine impurity 52 (CAS CATO-C4X-118852)
- Chlorphenamine Impurity 26 (CAS CATO-C4X-118826)
Recommended Standards
- 3479AF 5-Chloro-pyrrolo[2,3-b]pyridine-1-carboxylic acid tert-butyl ester 928653-82-1 C12H13ClN2O2 (CAS 928653-82-1)
- Difenidol Impurity 3 (CAS 63645-18-1)
- Ticlopidine Impurity E (CAS 721387-90-2)
- Benproperine Impurity 1 (CAS CATO-C4X-32461)
- Methotrexate Impurity 67 (CAS CATO-C4X-115467)
- Methylprednisolone impurity 92 (CAS CATO-C4X-191992)
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- 4-Bromo-6,7-dimethoxy-isoindolin-1-one (CAS 954239-46-4)
- 5,12-Dimethylbenzo[5,6][1,4]dioxino[2,3-g]isoquinoline (CAS 204459-33-6)
- (4-Methoxy-3,5-dimethylbenzyl)amine (CAS 1039927-88-2)
- 5-Chloro-4-methoxy-2-methylpyridine 1-oxide (CAS 108004-85-9)
- 2,5-Dimethyl-3-(2-(trifluoromethyl)-1H-imidazol-5-yl)piperazine (CAS 2366183-31-3)
- Methyl 4-{[(5-{[(4-bromophenyl)methanesulfinyl]methyl}-4-phenyl-4H-1,2,4-triazol-3-yl)sulfanyl]methyl}benzoate (CAS 344274-93-7)
- Anti-TF Antigen Peptide P30-1 trifluoroacetate salt (CAS 573664-50-3)
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