Cloxacillin Impurity 25 CAS CATO-C4X-159725
| CAS No. | CATO-C4X-159725 |
| Molecular Formula | C19H20ClN3O6S |
| Molecular Weight | 453.90 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C19H20ClN3O6S, Cloxacillin Impurity 25 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 453.90 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
As a process- or degradation-related impurity, Cloxacillin Impurity 25 (CAS CATO-C4X-159725, C19H20ClN3O6S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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.
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 | C19H20ClN3O6S |
| Molecular Weight | 453.90 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 Cloxacillin Standards
- Cloxacillin EP Impurity A (CAS 1642629-96-6)
- Cloxacillin Impurity 13 (CAS 5053-36-1)
- Cloxacillin Impurity 20 (CAS CATO-C4X-159720)
- Cloxacillin Impurity 6 (CAS CATO-C4X-15976)
- Cloxacillin Impurity 42 (CAS CATO-C4X-232142)
- Cloxacillin Impurity 21 (CAS CATO-C4X-159721)
- Cloxacillin Impurity 8 (CAS 76788-83-5)
- Cloxacillin Impurity 5 (CAS CATO-C4X-15975)
Recommended Standards
- 3-Amino-N-(2-chlorophenyl)-4-(trifluoromethyl)-5,6,7,8,9,10-hexahydrocycloocta[b]thieno[3,2-e]pyridine-2-carboxamide (CAS 626228-06-6)
- Rivaroxaban Impurity 209 (CAS CATO-C4X-1090209)
- 5-((4-Chlorobenzyl)thio)-N-(3,4-dimethylphenyl)-1-methyl-3-(trifluoromethyl)-1H-pyrazole-4-carboxamide (CAS 321553-31-5)
- Rivaroxaban Open Oxomorpholine Ring (CAS 1160170-00-2)
- Upadacitinib Impurity 42 (CAS CATO-C4X-240542)
- Doxylamine impurity 24 (CAS CATO-C4X-178924)
- Valganciclovir Hydrochloride EP Impurity K (CAS CATO-C4X-177416)
- 4-(3,4-Dimethoxyphenyl)-N-(2-methoxyphenyl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxamide (CAS 494195-81-2)
- 2-Methylquinolin-8-yl 2,5-dimethoxybenzenesulfonate (CAS 332021-80-4)
- methyl 1H-pyrazolo[4,3-d]pyrimidine-5-carboxylate (CAS 2445785-55-5)
- 5-((3-(Butylcarbamoyl)phenyl)amino)-5-oxopentanoic acid (CAS 940536-60-7)
- 2-(6-((5-(4-(1-Methylpiperidin-4-yl)phenyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)methyl)pyridin-2-yl)pentanedinitrile 2,2,2-trifluoroacetate (CAS 1956377-29-9)
- Fmoc-β-Ala-Arg(Pbf)-OH (CAS CATO-CPTD788640)
- Semaglutide Impurity 246 (CAS CATO-C4X-2226246)
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