5-Chloro-2-methoxybenzenesulfonyl chloride CAS 22952-32-5
| CAS No. | 22952-32-5 |
| Molecular Formula | C7H6Cl2O3S |
| Molecular Weight | 241.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-Chloro-2-methoxybenzenesulfonyl chloride (C7H6Cl2O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 241.09 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 5-Chloro-2-methoxybenzenesulfonyl chloride (CAS 22952-32-5), a certified reference material (molecular formula C7H6Cl2O3S, MW 241.09 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 5-Chloro-2-methoxybenzenesulfonyl chloride 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 | C7H6Cl2O3S |
| Molecular Weight | 241.09 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, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- 3-Chloro-5-methoxybenzenesulfonyl chloride (CAS 1058740-21-8)
- 2-Chloro-3-methoxybenzenesulfonyl chloride (CAS 1261581-13-8)
- 2-Chloro-4-methoxybenzene-1-sulfonyl chloride (CAS 23094-94-2)
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- 3-Chloro-2-methoxybenzenesulfonyl chloride (CAS 847652-81-7)
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