Benzenesulfonate Impurity 5 CAS CATO-C4X-28175
| CAS No. | CATO-C4X-28175 |
| Molecular Formula | C9H12O5S |
| Molecular Weight | 232.25 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Benzenesulfonate Impurity 5 (CAS CATO-C4X-28175), a pharmacopoeial impurity reference standard (molecular formula C9H12O5S, MW 232.25 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Benzenesulfonate Impurity 5 (C9H12O5S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C9H12O5S |
| Molecular Weight | 232.25 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Sulfur Atoms | 1 |
Related Benzenesulfonate Standards
- Benzenesulfonate Impurity 4 (CAS 309915-56-8)
- Phenyl benzenesulfonate (CAS 4358-63-8)
- Benzyl Benzenesulfonate (CAS 38632-84-7)
- Butyl Benzenesulfonate (CAS 80-44-4)
- Propyl benzenesulfonate (CAS 80-42-2)
- Ethyl Benzenesulfonate (CAS 515-46-8)
- Methyl Benzenesulfonate (CAS 80-18-2)
- Benzenesulfonate (CAS 3198-32-1)
Recommended Standards
- CAS CATO-C4X-28176 (CAS CATO-C4X-28176)
- Calcium Dobesilate Impurity 4 (CAS 2429952-20-3)
- CAS CATO-C4X-28177 (CAS CATO-C4X-28177)
- Calcium Dobesilate Impurity 23 (CAS CATO-C4X-205123)
- Fosaprepitant Impurity 37 (CAS CATO-C4X-116837)
- Apalutamide Impurity 75 (CAS CATO-C4X-274975)
- Dacarbazine EP Impurity A (CAS 4656-86-4)
- 2-Mercapto-1-(1-phenylethyl)pyrimidine-4,6(1H,5H)-dione (CAS 609836-98-8)
- N-(2-amino-2-oxoethyl)-1,6-naphthyridine-2-carboxamide (CAS 1565845-71-7)
- Ammonium 4-nitrobenzoate dihydrate (CAS 19416-70-7)
- 5-tert-butyl-1H-indole-2-carboxylic acid (CAS 194490-19-2)
- 3,3,3-Trifluoro-2-(m-tolyloxy)propan-1-amine (CAS 886763-76-4)
- Milrinone Impurity 19 (CAS 851345-36-3)
- Allo-D-Ile27-Tirzepatide (CAS CATO-CPTD788961)
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