Cefpirome Impurity 9 CAS 124667-21-6
| CAS No. | 124667-21-6 |
| Molecular Formula | C23H24N6O5S2 |
| Molecular Weight | 528.60 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 528.60 g/mol gives Cefpirome Impurity 9 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Cefpirome Impurity 9 (CAS 124667-21-6, C23H24N6O5S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Cefpirome Impurity 9 (C23H24N6O5S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 528.60 g/mol, it falls into the moderately-high-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.
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 certified reference material (CRM), Cefpirome Impurity 9 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 | C23H24N6O5S2 |
| Molecular Weight | 528.60 g/mol |
| Purity | >95% |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Cefpirome Standards
- Cefpirome Impurity 4 (CAS CATO-C4X-12074)
- Cefpirome Impurity 5 (CAS CATO-C4X-12075)
- Cefpirome Impurity 48 (CAS CATO-C4X-120748)
- Cefpirome Impurity 53 (CAS CATO-C4X-120753)
- Cefpirome Sulfate (CAS 84957-29-9)
- Cefpirome Impurity 1 (CAS 97164-55-1)
- Cefpirome Impurity 2 (CAS 124667-22-7)
- Cefpirome Impurity 3 (CAS 130431-30-0)
Recommended Standards
- Dabigatran Impurity 90 (CAS 1354892-78-6)
- Cefquinome (CAS 84957-30-2)
- N1,N1-Bis(6-aminoacridin-3-yl)adipamide (CAS 674787-09-8)
- Fmoc-Phe-Thr(Psi(Me,Me)pro)-OH (CAS 1196703-48-6)
- Morpholine Impurity 9 (CAS CATO-C4X-31689)
- Pregabalin Impurity 54 (CAS 51424-01-2)
- Tigecycline Impurity 32 (CAS CATO-C4X-186032)
- 3-(1-Ethylpiperidin-2-yl)-1,4,5,6,7,8-hexahydropyrazolo[3,4-b]azepine (CAS 585520-40-7)
- Mirabegron Impurity 145 (CAS CATO-C4X-1032145)
- (r)-2-((Tert-butoxycarbonyl)amino)-3-(isoquinolin-5-yl)propanoic acid (CAS 1354970-47-0)
- 4-Chloro-2-morpholinophenylboronic acid (CAS 2096337-81-2)
- 2,2-Dichloro-N-(2-hydroxyethyl)-N-(4-hydroxyphenyl)acetamide (CAS 3613-83-0)
- Methyl 2,2-dichloro-2-methoxyacetate (CAS 17640-25-4)
- Glucagon receptor antagonist I (CAS 438618-32-7)
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