Oxacillin Impurity 46 CAS CATO-C4X-232146
| CAS No. | CATO-C4X-232146 |
| Molecular Formula | C18H21N3O4S |
| Molecular Weight | 375.44 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Oxacillin Impurity 46 (CAS CATO-C4X-232146, C18H21N3O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Oxacillin Impurity 46 (C18H21N3O4S) 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 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 375.44 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).
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 | C18H21N3O4S |
| Molecular Weight | 375.44 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Oxacillin Standards
- Oxacillin EP Impurity D (CAS 1642559-63-4)
- Oxacillin Impurity 18 (CAS CATO-C4X-232118)
- Oxacillin Impurity 29 (CAS CATO-C4X-232129)
- Oxacillin Impurity 50 (CAS CATO-C4X-232150)
- Oxacillin Impurity 58 (CAS CATO-C4X-232158)
- Oxacillin Impurity 65 (CAS CATO-C4X-232165)
- Oxacillin Impurity 1 (CAS CATO-C4X-23211)
- Oxacillin Impurity 14 (CAS CATO-C4X-232114)
Recommended Standards
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