Oxacillin Impurity 9 CAS CATO-C4X-23219
| CAS No. | CATO-C4X-23219 |
| Molecular Formula | C19H19N3O6S |
| Molecular Weight | 417.44 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.
CATO supplies Oxacillin Impurity 9 (CAS CATO-C4X-23219), a pharmacopoeial impurity reference standard (molecular formula C19H19N3O6S, MW 417.44 g/mol) used for the identification and quantification of trace impurities in APIs.
Oxacillin Impurity 9 (C19H19N3O6S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C19H19N3O6S |
| Molecular Weight | 417.44 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Oxacillin Standards
- Oxacillin Impurity 43 (CAS CATO-C4X-232143)
- Oxacillin Monohydrate EP Impurity F (CAS 5053-35-0)
- Oxacillin Impurity 60 (CAS CATO-C4X-232160)
- Oxacillin Impurity 57 (CAS CATO-C4X-232157)
- Oxacillin Impurity 47 (CAS CATO-C4X-232147)
- Oxacillin Impurity 3 (CAS CATO-C4X-23213)
- Oxacillin Impurity 59 (CAS CATO-C4X-232159)
- Oxacillin dioxamide (CAS CATO-C4X-232130)
Recommended Standards
- 2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-methoxyphenyl)propanoic acid (CAS 1105045-82-6)
- Osimertinib Impurity 12 (CAS 2213409-62-0)
- N-Fmoc-3-methyl-l-tyrosine (CAS 1145678-51-8)
- N-(5-(3,5-Dimethoxyphenyl)-1,3,4-oxadiazol-2-yl)-3-(ethylsulfonyl)benzamide (CAS 886919-92-2)
- Edoxaban Impurity 138 (CAS CATO-C4X-1063138)
- Azilsartan Impurity 12 (CAS 1499167-72-4)
- Fosfomycin Impurity 63 (CAS CATO-C4X-131663)
- Dimethyl 2-(5-chloro-3-nitropyridin-2-yl)malonate (CAS 1261956-26-6)
- (4,5-Dichloro-6-oxopyridazin-1(6H)-yl)methyl 4-fluorobenzoate (CAS 439107-89-8)
- 2-(Propylthio)spiro[3.4]octane-2-carboxylic acid (CAS 1468655-24-4)
- H-Arg-Arg-βNA · 3 HCl (CAS 100900-26-3)
- methyl 3-(2,4-dioxoimidazolidin-1-yl)benzoate (CAS 1384661-56-6)
- Ponatinib Impurity 28 (CAS CATO-C4X-226928)
- Semaglutide impurity 27 (CAS CATO-C4X-222627)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com