Sivelestat sodium impurity 43 CAS CATO-C4X-212343
| CAS No. | CATO-C4X-212343 |
| Molecular Formula | C11H13ClO4S |
| Molecular Weight | 276.74 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 Sivelestat sodium impurity 43 (CAS CATO-C4X-212343), a pharmacopoeial impurity reference standard (molecular formula C11H13ClO4S, MW 276.74 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C11H13ClO4S, Sivelestat sodium impurity 43 contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 276.74 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO manufactures Sivelestat sodium impurity 43 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 | C11H13ClO4S |
| Molecular Weight | 276.74 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Sivelestat Standards
- Sivelestat sodium Impurity 2 (CAS 150374-99-5)
- Sivelestat sodium Impurity 32 (CAS CATO-C4X-212332)
- Sivelestat sodium impurity 41 (CAS CATO-C4X-212341)
- Sivelestat sodium impurity 42 (CAS CATO-C4X-212342)
- Sivelestat Impurity 10 (CAS CATO-C4X-212310)
- Sivelestat Impurity 27 (CAS CATO-C4X-212327)
- Sivelestat sodium impurity 45 (CAS CATO-C4X-212345)
- Sivelestat Impurity 18 (CAS 150374-97-3)
Recommended Standards
- 7-ACCA Impurity 3 (CAS CATO-C4X-23133)
- Chlorpropamide (CAS 94-20-2)
- tert-butyl (1-(2-chloroacetyl)piperidin-4-yl)carbamate (CAS 1013921-00-0)
- tert-Butyl (S)-(1-(2-chloroacetyl)piperidin-3-yl)carbamate (CAS 1107645-71-5)
- Levocarnitine Impurity 43 (CAS 6538-82-5)
- Rifapentine impurity 26 (CAS CATO-C4X-195926)
- Neostigmine Impurity 12 (CAS CATO-C4X-204212)
- 3-(Difluoromethyl)-5-((4-methoxy-2-nitrophenyl)thio)-4H-1,2,4-triazole (CAS 1706450-48-7)
- Menaquinone impurity 29 (CAS CATO-C4X-207629)
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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