Rivastigmine Impurity 19 CAS CATO-C4X-138419
| CAS No. | CATO-C4X-138419 |
| Molecular Formula | C10H12N2O4 |
| Molecular Weight | 224.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Rivastigmine Impurity 19 (CAS CATO-C4X-138419, C10H12N2O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C10H12N2O4, Rivastigmine Impurity 19 contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 224.21 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).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C10H12N2O4 |
| Molecular Weight | 224.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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 | 2 |
Related Rivastigmine Standards
- Rivastigmine Impurity 14 (CAS 1346242-31-6)
- Rivastigmine EP Impurity C (CAS 855300-09-3)
- Rivastigmine USP Related Compound B (CAS 25081-93-0)
- Rivastigmine EP Impurity B (CAS 1230021-28-9)
- Rivastigmine EP Impurity E (CAS 923035-05-6)
- Rivastigmine RC 5 (CAS 1070660-34-2)
- Rivastigmine USP Related Compound F (CAS 1346602-84-3)
- Rivastigmine Impurity 11 (CAS 123441-03-2)
Recommended Standards
- Metoclopramide Impurity 67 (CAS CATO-C4X-141567)
- Guaifenesin Impurity 5 (CAS 2049-21-0)
- Ketoprofen Impurity 53 (CAS 1420774-68-0)
- Repaglinide EP Impurity A (CAS 220438-80-2)
- Difenidol Impurity 2 HCl (CAS CATO-C4X-22272)
- Canagliflozin Impurity 79 (CAS 2265214-90-0)
- Evocalcet Impurity 69 (CAS CATO-C4X-248569)
- Fmoc-D-lle--Me-D-Leu-D- Leu-OH (CAS CATO-C4X-2226174)
- 6-Fluoropyrazolo[1,5-a]pyridine-2-carboxylic acid (CAS 876379-76-9)
- (2E)-1-(4-Methoxyphenyl)-3-(3-methylphenyl)prop-2-en-1-one (CAS 1287761-30-1)
- 3,7-Dimethyldibenzo[b,d]furan (CAS 41738-54-9)
- (3-(Methoxymethyl)phenyl)methanamine (CAS 148278-90-4)
- 1-(3-Nitro-4-(p-tolylthio)benzyl)pyrrolidine (CAS 477869-45-7)
- Hexapeptide-9 (CAS 1228371-11-6)
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