Rivastigmine Impurity N2 CAS 894079-42-6
| CAS No. | 894079-42-6 |
| Molecular Formula | C9H13NO |
| Molecular Weight | 151.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Rivastigmine Impurity N2 (CAS 894079-42-6) is a certified pharmaceutical impurity reference standard with the molecular formula C9H13NO and a molecular weight of 151.21 g/mol.
Structurally, Rivastigmine Impurity N2 (C9H13NO) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 151.21 g/mol, it falls into the medium-molecular-weight range. 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).
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), Rivastigmine Impurity N2 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 | C9H13NO |
| Molecular Weight | 151.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Rivastigmine Standards
- Rivastigmine Impurity 25 (CAS 18840-47-6)
- Rivastigmine RC 1 (CAS 923035-06-7)
- Rivastigmine EP Impurity G (CAS 23308-82-9)
- Rivastigmine EP Impurity H (CAS 586-37-8)
- Rivastigmine EP Impurity A (CAS 139306-10-8)
- Rivastigmine Impurity 10 (CAS 105601-04-5)
- Rivastigmine Impurity 45 (CAS 26050-44-2)
- Rivastigmine RC 6 (CAS 851086-95-8)
Recommended Standards
- Neostigmine Impurity N4 (CAS 3483-84-9)
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- Methyl (s)-3-amino-3-(4-ethylphenyl)propanoate (CAS 1213620-82-6)
- 2-Bromo-3-chloro-5-fluoropyridine, 95% (CAS 1214326-94-9)
- Scopolamine N-oxide hydrobromide (CAS 6106-81-6)
- (2,4-Dioxo-1,4-dihydroquinazolin-3(2H)-yl)acetic acid (CAS 78754-94-6)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
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