Cilastatin EP Impurity B (Mixture Of Diastereomers) CAS CATO-C4X-19602
| CAS No. | CATO-C4X-19602 |
| Molecular Formula | C21H34N2O6S |
| Molecular Weight | 442.57 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Cilastatin EP Impurity B (Mixture Of Diastereomers) is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Cilastatin EP Impurity B (Mixture Of Diastereomers) (CAS CATO-C4X-19602) is a certified pharmaceutical impurity reference standard with the molecular formula C21H34N2O6S and a molecular weight of 442.57 g/mol.
Structurally, Cilastatin EP Impurity B (Mixture Of Diastereomers) (C21H34N2O6S) contains a steroid core, 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 442.57 g/mol, it falls into the moderately-high-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 | C21H34N2O6S |
| Molecular Weight | 442.57 g/mol |
| Purity | >85% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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 |
| Sulfur Atoms | 1 |
Related Cilastatin Standards
- Cilastatin EP Impurity B (CAS CATO-C4X-196039)
- Cilastatin Impurity 37 (CAS CATO-C4X-196037)
- Cilastatin EP Impurity C (CAS 2245159-80-0)
- Cilastatin EP Impurity A(Mixture Of Diastereomers) (CAS CATO-C4X-19601)
- Cilastatin Impurity 38 (CAS CATO-C4X-196038)
- Cilastatin Impurity 23 (CAS CATO-C4X-196023)
- Cilastatin Sodium - Impurity G (CAS 1174657-12-5)
- Cilastatin (CAS 82009-34-5)
Recommended Standards
- Ethyl 2-(2-((4-methylbenzyl)thio)-4,5-diphenyl-1H-imidazol-1-yl)acetate (CAS 339278-02-3)
- 1-Benzhydryl-4-(naphthalen-2-ylsulfonyl)piperazine (CAS 324067-27-8)
- Perospirone Impurity 22 (CAS CATO-C4X-245822)
- GNE-131, >98% (HPLC) (CAS 1629063-81-5)
- Esmolol Impurity 23 (CAS CATO-C4X-189123)
- Febuxostat Impurity 25 (CAS 1530308-87-2)
- Sulbactam EP Impurity D (CAS 26631-90-3)
- 5-methyl-1-(4-methylphenyl)-2,3-dihydro-1H-imidazol-2-one (CAS 14059-07-5)
- N-(3-acetylphenyl)-2-fluorobenzamide (CAS 303091-99-8)
- Entecavir Impurity 55 (CAS 1354695-84-3)
- 2-(tert-Butyl)-5-phenyl-2,4-dihydro-3H-pyrazol-3-one (CAS 765957-19-5)
- 1-Benzyl-N-methoxy-N-methylpiperidine-4-carboxamide (CAS 301219-96-5)
- Ambroxol Impurity 32 (CAS CATO-C4X-108532)
- C-Peptide (human) (CAS 33017-11-7)
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