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Atomfair 1,3-Isobenzofurandione, 5,5′-sulfonylbis- C16H6O8S

Description 1,3-Isobenzofurandione, 5,5′-sulfonylbis- (CAS No. 2540-99-0) is a high-purity aromatic sulfonyl-bridged dianhydride compound with the molecular formula C16H6O8S . This specialized chemical serves as a critical building block in advanced polymer synthesis, particularly for high-performance polyimides and polyamide-imides. The compound features two reactive phthalic anhydride groups connected by a sulfonyl linker, enabling the formation of thermally stable polymers with exceptional mechanical properties. With an IUPAC name of 5-[(1,3-dioxo-2-benzofuran-5-yl)sulfonyl]-2-benzofuran-1,3-dione , this white to off-white crystalline powder offers excellent solubility in polar aprotic solvents while maintaining high thermal stability (>300??C). Our product undergoes rigorous QC testing including HPLC purity analysis, melting point…

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Description

Description

1,3-Isobenzofurandione, 5,5′-sulfonylbis- (CAS No. 2540-99-0) is a high-purity aromatic sulfonyl-bridged dianhydride compound with the molecular formula C16H6O8S. This specialized chemical serves as a critical building block in advanced polymer synthesis, particularly for high-performance polyimides and polyamide-imides. The compound features two reactive phthalic anhydride groups connected by a sulfonyl linker, enabling the formation of thermally stable polymers with exceptional mechanical properties. With an IUPAC name of 5-[(1,3-dioxo-2-benzofuran-5-yl)sulfonyl]-2-benzofuran-1,3-dione, this white to off-white crystalline powder offers excellent solubility in polar aprotic solvents while maintaining high thermal stability (>300??C). Our product undergoes rigorous QC testing including HPLC purity analysis, melting point verification, and moisture content determination to ensure batch-to-batch consistency for research and industrial applications.

  • CAS No: 2540-99-0
  • Molecular Formula: C16H6O8S
  • Molecular Weight: 358.3
  • Exact Mass: 357.97833832
  • Monoisotopic Mass: 357.97833832
  • IUPAC Name: 5-[(1,3-dioxo-2-benzofuran-5-yl)sulfonyl]-2-benzofuran-1,3-dione
  • SMILES: C1=CC2=C(C=C1S(=O)(=O)C3=CC4=C(C=C3)C(=O)OC4=O)C(=O)OC2=O
  • Synonyms: 2540-99-0, 5,5′-Sulfonylbis(isobenzofuran-1,3-dione), 3,3′,4,4′-Diphenylsulfonetetracarboxylic dianhydride, 1,3-Isobenzofurandione, 5,5′-sulfonylbis-, 4,4′-Sulfonyldiphthalic dianhydride

Application

This sulfonyl-bridged dianhydride is primarily employed as a monomer for synthesizing high-temperature resistant polyimides used in aerospace composites and microelectronics encapsulation. The sulfonyl linkage imparts enhanced solubility to resulting polymers while maintaining thermal stability, making it valuable for flexible printed circuit boards and optoelectronic materials. Researchers also utilize it to develop gas separation membranes and proton-conducting materials for fuel cell applications.

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