Carbocisteine Impurity 28 CAS CATO-C4X-201028
| CAS No. | CATO-C4X-201028 |
| Molecular Formula | C11H13NO6S |
| Molecular Weight | 287.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Carbocisteine Impurity 28 (CAS CATO-C4X-201028) is a certified pharmaceutical impurity reference standard with the molecular formula C11H13NO6S and a molecular weight of 287.29 g/mol.
Structurally, Carbocisteine Impurity 28 (C11H13NO6S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 287.29 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
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 | C11H13NO6S |
| Molecular Weight | 287.29 g/mol |
| 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 | 1 |
| Sulfur Atoms | 1 |
Related Carbocisteine Standards
- Carbocisteine Impurity 48 (CAS CATO-C4X-201048)
- Carbocisteine Impurity 57 (CAS CATO-C4X-201057)
- Carbocisteine Impurity 42 (CAS CATO-C4X-201042)
- Carbocisteine Impurity 56 (CAS CATO-C4X-201056)
- Carbocisteine Impurity 29 (CAS CATO-C4X-201029)
- Carbocisteine Impurity 30 (CAS CATO-C4X-201030)
- Carbocisteine Impurity 59 (CAS CATO-C4X-201059)
- Carbocisteine Impurity 32 (CAS CATO-C4X-201032)
Recommended Standards
- Ceftazidime Impurity 45 (CAS 2647895-27-8)
- 5-(1-Aminoethyl)-N-(4-(trifluoromethyl)phenyl)thiazol-2-amine (CAS 1095824-42-2)
- N-Tosyl-L-aspartic Acid (CAS 4816-82-4)
- 4-Methyl-N-(5-phenyl-1,3,4-oxadiazol-2-yl)-1,2,3-thiadiazole-5-carboxamide (CAS 1207048-79-0)
- Crisaborole Impurity 21 (CAS CATO-C4X-202121)
- Valsartan Impurity 129 (CAS CATO-C4X-1057129)
- Lovastatin Impurity 16 (CAS CATO-C4X-168416)
- (S)-N-Methyl-1,1,1-trifluoro-2-propylsulfamide (CAS 1389310-40-0)
- 10-Bromo-2-iodo-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine (CAS 1282518-61-9)
- 2-Amino-4-(4-chloro-3,5-dimethyl-1h-pyrazol-1-yl)butanoic acid (CAS 1310081-99-2)
- 2-(5,5-dimethyl-2,4-dioxoimidazolidin-1-yl)acetonitrile (CAS 1311317-21-1)
- 5,6-Diamino-2-(dimethylamino)-3-methylpyrimidin-4(3H)-one (CAS 61693-37-6)
- 6-Bromo-1,2,3,4-tetrahydronaphthalen-1-amine hydrochloride (CAS 1810069-91-0)
- Des-His(1)-Semaglutide (CAS CATO-C4X-2226216)
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