Cloxacillin Thiol Carboxylate Benzathine Salt CAS 5230-02-4
| CAS No. | 5230-02-4 |
| Molecular Formula | C18H19ClN2O3S |
| Molecular Weight | 378.87 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, Cloxacillin Thiol Carboxylate Benzathine Salt is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 378.87 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Cloxacillin Thiol Carboxylate Benzathine Salt (CAS 5230-02-4), molecular formula C18H19ClN2O3S and molecular weight 378.87 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C18H19ClN2O3S |
| Molecular Weight | 378.87 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Cloxacillin Standards
- Cloxacillin EP Impurity B (CAS 1642559-64-5)
- Cloxacillin Impurity 31 (CAS CATO-C4X-159731)
- Cloxacillin Impurity 32 (CAS CATO-C4X-159732)
- Cloxacillin Impurity 37 (CAS CATO-C4X-159737)
- Cloxacillin Impurity 6 (CAS CATO-C4X-15976)
- Cloxacillin Impurity 42 (CAS CATO-C4X-232142)
- Cloxacillin Impurity 13 (CAS 5053-36-1)
- Cloxacillin EP Impurity A (CAS 1642629-96-6)
Recommended Standards
- 5-Chloro-2-methoxy-N-(2-(2-methyl-1H-indol-3-yl)ethyl)benzenesulfonamide (CAS 442658-95-9)
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- 19862-53-4 3-(1-Naphthyl)piperidine hydrochloride 6692AD C15H18ClN (CAS 19862-53-4)
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