Cloxacillin Impurity 31 CAS CATO-C4X-159731
| CAS No. | CATO-C4X-159731 |
| Molecular Formula | C18H20ClN3O4S |
| Molecular Weight | 409.89 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C18H20ClN3O4S, Cloxacillin Impurity 31 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 409.89 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies Cloxacillin Impurity 31 (CAS CATO-C4X-159731), a pharmacopoeial impurity reference standard (molecular formula C18H20ClN3O4S, MW 409.89 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures Cloxacillin Impurity 31 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C18H20ClN3O4S |
| Molecular Weight | 409.89 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) | 10.0 |
| 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 B (CAS 1642559-64-5)
- Cloxacillin Impurity 32 (CAS CATO-C4X-159732)
- Cloxacillin Impurity 37 (CAS CATO-C4X-159737)
- Cloxacillin Thiol Carboxylate Benzathine Salt (CAS 5230-02-4)
- 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
- 3,8-Dibromo-6-(bromomethyl)-5-methoxyquinoline (CAS 1257833-20-7)
- Rivaroxaban Impurity 161 (CAS 482305-98-6)
- Prasugrel EP Impurity E Maleate Salt (CAS 1373350-61-8)
- Rivaroxaban Ethylamino Analog (CAS 2484747-45-5)
- Arotinolol Impurity 57 (CAS CATO-C4X-185457)
- Edoxaban Impurity 73 (CAS 1057651-37-2)
- Azilsartan Impurity 158 (CAS 183986-64-3)
- 1-Chloro-4-(pent-4-en-1-yl)benzene (CAS 134831-42-8)
- 2-(2-Amino-4-dimethylanilino)-1-ethanol (CAS 912284-73-2)
- 7-Methoxy-3-(piperidin-1-yl)isoquinoline-5,8-dione (CAS 54753-69-4)
- N-(4-methoxybenzyl)tetrahydrofuran-3-amine (CAS 1341464-58-1)
- 2-Chloro-N-(3,4-dimethoxyphenyl)quinazolin-4-amine (CAS 827030-99-9)
- Tavaborole Impurity 10 (CAS 947165-26-6)
- Retatrutide (CAS 2381089-83-2)
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