| CAS No. | CATO-C4X-232148 |
| Molecular Formula | C27H31N5O8S2 |
| Molecular Weight | 617.69 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 617.69 g/mol gives Oxacillin Impurity 48 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Oxacillin Impurity 48 (CAS CATO-C4X-232148) is a certified pharmaceutical impurity reference standard with the molecular formula C27H31N5O8S2 and a molecular weight of 617.69 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Oxacillin Impurity 48 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 617.69 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Oxacillin Impurity 48 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.
| Molecular Formula | C27H31N5O8S2 |
| Molecular Weight | 617.69 g/mol |
| Purity | 97%+ |
| 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 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |