Date published: 2026-5-19

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Azobenzene-4-sulfonyl Chloride (CAS 58359-53-8)

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Alternate Names:
4-Phenylazobenzenesulfonyl Chloride
CAS Number:
58359-53-8
Molecular Weight:
280.73
Molecular Formula:
C12H9ClN2O2S
Supplemental Information:
This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Azobenzene-4-sulfonyl Chloride is used as a catalyst in organic synthesis, as a reagent in the production of polymers, and in the synthesis of dyes. It is also employed in the synthesis of a variety of compounds, including heterocyclic compounds, aromatic compounds, and azo dyes. Azobenzene-4-sulfonyl Chloride is an electrophilic reagent that reacts with nucleophiles such as amines and alcohols to form aryl sulfonamides and aryl sulfonates, respectively. The reaction is catalyzed by a base, such as an alkali metal or an alkaline earth metal. The reaction proceeds via a nucleophilic substitution mechanism, in which the Azobenzene-4-sulfonyl Chloride molecule acts as the electrophile and the nucleophile is the amine or alcohol.


Azobenzene-4-sulfonyl Chloride (CAS 58359-53-8) References

  1. Chiroptical switching in the azobenzene-based self-locked [1]rotaxane by solvent and photoirradiation.  |  Song, X., et al. 2023. Chirality.. PMID: 37013339
  2. Determination of steroids by densitometry of derivatives. I. Assay of estrogens as azobenzene-4-sulfonates.  |  Penzes, LP. and Oertel, GW. 1970. J Chromatogr. 51: 322-4. PMID: 5507076

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Azobenzene-4-sulfonyl Chloride, 5 g

sc-471762
5 g
$398.00