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Atomfair Phenyl Methanesulfonate C7H8O3S CAS 16156-59-5

Phenyl Methanesulfonate (CAS No. 16156-59-5) is a high-purity organic sulfonate ester with the molecular formula C7H8O3S . This compound, also known by its IUPAC name phenyl methanesulfonate , is a versatile reagent widely used in organic synthesis, pharmaceutical research, and material science. It features a methanesulfonate (mesylate) group bonded to a phenyl ring, offering excellent reactivity as an alkylating or sulfonating agent. Our product is rigorously tested for purity (typically ≥98% by HPLC) and is supplied as a clear to pale-yellow liquid with minimal moisture content. Suitable for use under inert atmospheres, it is packaged in amber glass bottles to…

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Description

Phenyl Methanesulfonate (CAS No. 16156-59-5) is a high-purity organic sulfonate ester with the molecular formula C7H8O3S. This compound, also known by its IUPAC name phenyl methanesulfonate, is a versatile reagent widely used in organic synthesis, pharmaceutical research, and material science. It features a methanesulfonate (mesylate) group bonded to a phenyl ring, offering excellent reactivity as an alkylating or sulfonating agent. Our product is rigorously tested for purity (typically ≥98% by HPLC) and is supplied as a clear to pale-yellow liquid with minimal moisture content. Suitable for use under inert atmospheres, it is packaged in amber glass bottles to ensure stability. Ideal for nucleophilic substitution reactions, cross-coupling protocols, and as a precursor for advanced intermediates.

Properties

  • CAS Number: 16156-59-5
  • Complexity: 196
  • IUPAC Name: phenyl methanesulfonate
  • InChI: InChI=1S/C7H8O3S/c1-11(8,9)10-7-5-3-2-4-6-7/h2-6H,1H3
  • InChI Key: WXVUCMFEGJUVTN-UHFFFAOYSA-N
  • Exact Mass: 172.01941529
  • Molecular Formula: C7H8O3S
  • Molecular Weight: 172.20
  • SMILES: CS(=O)(=O)OC1=CC=CC=C1
  • Topological: 51.8
  • Monoisotopic Mass: 172.01941529
  • Synonyms: Phenyl methanesulfonate, 16156-59-5, DTXSID60311482, DTXCID20262608, 626-664-7, Methanesulfonic acid, phenyl ester, phenylmethanesulfonate, MFCD00095143, Methanesulfonic Acid Phenyl Ester, NSC243664, phenyl methylsulfonate, phenyl methyl sulfonate, Phenylmethanesulfonate (4), SCHEMBL23130, SCHEMBL23650, Phenyl methanesulfonate, 98%, SCHEMBL323791, SCHEMBL2287643, BDBM237292, AKOS006221855, AB10306, FS-3895, NSC 243664, NSC-243664, SY050523, DB-043496, CS-0150117, P1852, ST50411029

Application

Phenyl Methanesulfonate is commonly employed as an electrophilic reagent in organic synthesis, particularly in nucleophilic aromatic substitution reactions. It serves as a key intermediate in the preparation of pharmaceuticals, agrochemicals, and specialty chemicals. Researchers utilize it in Suzuki-Miyaura and other cross-coupling reactions due to its reactive mesylate leaving group. Additionally, it finds use in polymer chemistry as a modifying agent for aromatic monomers.

Safety and Hazards

GHS Hazard Statements

  • H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
  • H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
  • H335 (97.6%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

  • P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

  • Skin Irrit. 2 (100%)
  • Eye Irrit. 2 (100%)
  • STOT SE 3 (97.6%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.

Disclaimer

Intended Use & Restrictions

This product is sold exclusively for laboratory research, analytical testing, or non-commercial purposes.

  • Strictly prohibited: Resale, repackaging, or formulation into commercial products.
  • Not approved for human/animal use, diagnostics, or manufacturing (including pharmaceuticals, agrochemicals, or consumer goods).

Patent & Regulatory Compliance

Certain molecules may be protected by active patents or regulatory restrictions.

  • Buyers must independently verify patent status (e.g., via USPTO/EPO/CNIPA) and comply with local laws.
  • Atomfair LLC does not provide legal assurances regarding patent non-infringement or jurisdictional compliance.

Liability Release

By purchasing, the buyer agrees to:

  • Use this product only as permitted by law.
  • Indemnify Atomfair LLC against all claims arising from misuse, patent infringement, or regulatory violations.

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