Rivastigmine impurity 35 CAS CATO-C4X-138435
| CAS No. | CATO-C4X-138435 |
| Molecular Formula | C13H19N3O3 |
| Molecular Weight | 265.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Rivastigmine impurity 35.
Rivastigmine impurity 35 (CAS CATO-C4X-138435) is a certified pharmaceutical impurity reference standard with the molecular formula C13H19N3O3 and a molecular weight of 265.31 g/mol.
Based on its molecular formula C13H19N3O3, Rivastigmine impurity 35 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 265.31 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 35 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 | C13H19N3O3 |
| Molecular Weight | 265.31 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Rivastigmine Standards
- Rivastigmine impurity 32 (CAS CATO-C4X-138432)
- Rivastigmine Diethyl Analog (CAS 1230021-34-7)
- Rivastigmine N-Oxide Impurity (CAS CATO-C4X-138438)
- Rivastigmine Impurity 29 (CAS CATO-C4X-138429)
- Rivastigmine Impurity 44 (CAS 1285033-79-5)
- Rivastigmine Impurity 41 (CAS CATO-C4X-138441)
- Rivastigmine –D6 (Racemic mixture) (CAS 194930-04-6)
- Rivastigmine-d5 (CAS 1133229-22-7)
Recommended Standards
- Ondansetron Impurity 8 (CAS 99614-13-8)
- N-Nitroso Rivastigmine Hydrogen Tartrate EP Impurity E (CAS 3079775-26-8)
- Phenylephrine Impurity 25 (CAS CATO-C4X-146725)
- Ramosetron impurity 29 (CAS CATO-C4X-118229)
- Duloxetine Impurity 48 (CAS 2133315-16-7)
- Tretinoin Impurity 25 (CAS CATO-C4X-196925)
- Carbetocin Impurity 11 (CAS CATO-C4X-191111)
- Binimetinib Impurity N2 (CAS 1415559-93-1)
- 6-Mercapto-4-methylnicotinonitrile (CAS 1355196-94-9)
- 3-(4-Chlorophenyl)-6-((pyridin-4-ylmethyl)thio)pyridazine (CAS 899740-33-1)
- 3,6-Dimethylpyrazolo[1,5-a]pyrimidin-7(1H)-one (CAS 90223-07-7)
- (4S)-3,4-Dihydro-6-methoxy-2H-1-benzopyran-4-ol (CAS 1270299-61-0)
- tert-Butyl 4-(methyl(oxetan-3-yl)-amino)piperidine-1-carboxylate (CAS 1257293-69-8)
- Semaglutide impurity 271 (CAS CATO-C4X-2226271)
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