Rivastigmine EP Impurity G CAS 23308-82-9
| CAS No. | 23308-82-9 |
| Molecular Formula | C9H12O2 |
| Molecular Weight | 152.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Rivastigmine EP Impurity G is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Rivastigmine EP Impurity G (CAS 23308-82-9), a pharmacopoeial impurity reference standard (molecular formula C9H12O2, MW 152.19 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C9H12O2, Rivastigmine EP Impurity G contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 152.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Rivastigmine EP Impurity G 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 | C9H12O2 |
| Molecular Weight | 152.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
Related Rivastigmine Standards
- Rivastigmine Impurity 25 (CAS 18840-47-6)
- Rivastigmine Impurity N2 (CAS 894079-42-6)
- Rivastigmine RC 1 (CAS 923035-06-7)
- 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
- Metoprolol Impurity 23 (CAS 330976-39-1)
- Dapoxetine Impurity 86 (CAS 103548-16-9)
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- Piperazine Impurity 23 (CAS 61379-66-6)
- Dicloxacillin EP Impurity B (CAS 1642576-88-2)
- Brivaracetam Impurity 43 (CAS CATO-C4X-200743)
- 3-ethynyl-3-methyl-azetidine (CAS 2168144-68-9)
- Cyclohepta-2,4,6-trien-1-ylium hexafluorophosphate(V) (CAS 29663-54-5)
- N-(2-(4-((4-Fluorobenzyl)amino)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)acetamide (CAS 1211272-94-4)
- Nemonoxacin Impurity 6 (CAS 2770004-79-8)
- (R,S)-BnIn-Sabox (CAS 394738-76-2)
- n,n-Diethyl-3-(5-mercapto-4-(2,4,4-trimethylpentan-2-yl)-4h-1,2,4-triazol-3-yl)benzenesulfonamide (CAS 522606-43-5)
- Peptide Impurity 27 (CAS 1350456-68-6)
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