Carbocisteine Impurity 4(Mixture of diastereomers) CAS 5439-87-2
| CAS No. | 5439-87-2 |
| Molecular Formula | C5H9NO5S |
| Molecular Weight | 195.19 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 Carbocisteine Impurity 4(Mixture of diastereomers).
Carbocisteine Impurity 4(Mixture of diastereomers) (CAS 5439-87-2) is a certified pharmaceutical impurity reference standard with the molecular formula C5H9NO5S and a molecular weight of 195.19 g/mol.
Structurally, Carbocisteine Impurity 4(Mixture of diastereomers) (C5H9NO5S) contains a carbohydrate-derived structure, an amide group, a sulfone group. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 195.19 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), Carbocisteine Impurity 4(Mixture of diastereomers) 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 | C5H9NO5S |
| Molecular Weight | 195.19 g/mol |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Carbocisteine Standards
- Carbocisteine (R)-S-Oxide (CAS 61475-35-2)
- Carbocisteine (S)-S-Oxide (CAS 112246-66-9)
- Carbocisteine Impurity 50 (CAS CATO-C4X-201050)
- Carbocisteine Impurity 51 (CAS CATO-C4X-201051)
- Carbocisteine Impurity 52 (CAS CATO-C4X-201052)
- Carbocisteine Impurity 43 (CAS CATO-C4X-201043)
- Carbocisteine-d3 (CAS CATO-C4X-20105)
- Carbocisteine Impurity 55 (CAS CATO-C4X-201055)
Recommended Standards
- Tiopronin Impurity 8 (CAS CATO-C4X-15168)
- N-acetyl-N-(2-fluorophenyl)acetamide (CAS 883555-12-2)
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- Letermovir Impurity 102 (CAS CATO-C4X-2915102)
- Altrenogest impurity 16 (CAS CATO-C4X-248316)
- Tafluprost Impurity 22 (CAS CATO-C4X-216322)
- Propofol Impurity 60 (CAS CATO-C4X-147360)
- rel-(4R,5S)-4,5-Bis(4-chlorophenyl)-2-[4-(1,1-dimethylethyl)-2-ethoxyphenyl]-4,5-dihydro-4,5-dimethyl-1H-imidazole (CAS 939981-35-8)
- Tert-butyl (1R,5S)-3,9-diazabicyclo[3.3.2]Decane-9-carboxylate hydrochloride (CAS 1820569-14-9)
- 2,2-Dimethyl-3-(4-methyl-piperidin-1-yl)-propionaldehyde (CAS 690632-29-2)
- Epinastine Impurity 53 (CAS 114-39-6)
- N-benzyl-1-(2-chlorothiazol-5-yl)-N-methylmethanamine (CAS 477848-42-3)
- 1,6-Di(spiro[fluorene-9,9'-xanthen]-2-yl)pyrene (CAS 1246183-53-8)
- Smac-N7 Peptide (CAS 401913-57-3)
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