Carbocisteine Impurity 2 CAS 2820941-84-0
| CAS No. | 2820941-84-0 |
| Molecular Formula | C7H9NO5S |
| Molecular Weight | 219.22 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Carbocisteine Impurity 2 (C7H9NO5S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Carbocisteine Impurity 2 (CAS 2820941-84-0) is a certified pharmaceutical impurity reference standard with the molecular formula C7H9NO5S and a molecular weight of 219.22 g/mol.
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.
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 | C7H9NO5S |
| Molecular Weight | 219.22 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2003 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Carbocisteine Standards
- Carbocisteine Impurity 10 (CAS 1601460-92-7)
- Carbocisteine Impurity 20 (CAS 4271-36-7)
- Carbocisteine Impurity 44 (CAS CATO-C4X-201044)
- Carbocisteine Impurity 17 (CAS 15253-37-9)
- Carbocisteine Impurity 11 (CAS 25515-73-5)
- Carbocisteine Impurity 55 (CAS CATO-C4X-201055)
- Carbocisteine Impurity 60 (CAS CATO-C4X-201060)
- Carbocisteine Impurity 22 (CAS CATO-C4X-201022)
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Why CATO?
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