Cefazolin Impurity 74 CAS CATO-C4X-157774
| CAS No. | CATO-C4X-157774 |
| Molecular Formula | C19H20N8O7S4 |
| Molecular Weight | 600.67 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 600.67 g/mol gives Cefazolin Impurity 74 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Cefazolin Impurity 74 (CAS CATO-C4X-157774) is a certified pharmaceutical impurity reference standard with the molecular formula C19H20N8O7S4 and a molecular weight of 600.67 g/mol.
Based on its molecular formula C19H20N8O7S4, Cefazolin Impurity 74 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 600.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Cefazolin Impurity 74 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 | C19H20N8O7S4 |
| Molecular Weight | 600.67 g/mol |
| Purity | ＞90% |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 4 |
Related Cefazolin Standards
- Cefazolin Impurity 75 (CAS CATO-C4X-157775)
- Cefazolin Impurity 77 (CAS CATO-C4X-157777)
- Cefazolin Impurity 72 (CAS CATO-C4X-157772)
- Cefazolin Impurity 54 (CAS CATO-C4X-157754)
- Cefazolin Impurity 66 (CAS CATO-C4X-157766)
- Cefazolin Impurity 88 (CAS CATO-C4X-157788)
- Cefazolin Impurity 24 (CAS CATO-C4X-157724)
- Cefazolin Impurity 60 (CAS CATO-C4X-157760)
Recommended Standards
- Cyclopeptide-5 (CAS 197172-76-2)
- 1,4-Bis(methoxy)-2,5-bis(4,2':6',4"-terpyridin-4'-yl)benzene (CAS 1698911-97-5)
- Cefodizime Impurity 23 (CAS CATO-C4X-180623)
- Bradykinin (2-7) (CAS 23828-06-0)
- Indocyanine green Impurity 58 (CAS CATO-C4X-250358)
- Gimeracil Impurity 1 (CAS CATO-C4X-12141)
- Empagliflozin impurity 268 (CAS CATO-C4X-1065268)
- Bimatoprost Impurity 9 (CAS 32233-40-2)
- Everolimus Impurity 5 (CAS CATO-C4X-11225)
- Fumonisin B1-13C4 (CAS 1324564-22-8)
- 7-Methoxy-3-methyl-1,2-dihydroquinolin-2-one (CAS 913613-84-0)
- Methyl 8-bromo-4,5-dihydrobenzo[b]thieno[2,3-d]oxepine-2-carboxylate (CAS 1189815-76-6)
- N-(4,7-Dihydroxy-8-methyl-2-oxo-2H-chromen-3-yl)-4-hydroxy-3-(3-methylbut-2-en-1-yl)benzamide (CAS 485-23-4)
- Semaglutide impurity 57 (CAS 2773558-06-6)
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