Dicloxacillin Impurity 8 CAS CATO-C4X-16158
| CAS No. | CATO-C4X-16158 |
| Molecular Formula | C20H21Cl2N3O6S |
| Molecular Weight | 502.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Dicloxacillin Impurity 8 (CAS CATO-C4X-16158) is a certified pharmaceutical impurity reference standard with the molecular formula C20H21Cl2N3O6S and a molecular weight of 502.37 g/mol.
Dicloxacillin Impurity 8 (C20H21Cl2N3O6S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C20H21Cl2N3O6S |
| Molecular Weight | 502.37 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Dicloxacillin Standards
- Dicloxacillin Impurity C34 (CAS 42947-69-3)
- Dicloxacillin EP Impurity A (CAS CATO-C4X-16151)
- Dicloxacillin Impurity 7 (CAS CATO-C4X-16157)
- Dicloxacillin Impurity 3 (CAS CATO-C4X-16153)
- Dicloxacillin Impurity 4 (CAS CATO-C4X-16154)
- Dicloxacillin (CAS 3116-76-5)
- Dicloxacillin EP Impurity B (CAS 1642576-88-2)
- Dicloxacillin impurity 2 (CAS CATO-C4X-16152)
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