CAS Registry Number

CAS 2540-99-0 — 3,3',4,4'-Diphenylsulfonetetracarboxylic dianhydride

3,3',4,4'-Diphenylsulfonetetracarboxylic dianhydride is a high-performance organic compound used in the synthesis of advanced polymers and specialty materials. It serves as a key monomer in the production of polyimides and other high-temperature resistant materials. Available with CAS number 2540-99-0, molecular formula SO2(C8O3)2, and molecular weight 352.23 g/mol, it is stable at ambient storage conditions. This compound carries a warning signal word due to potential health hazards. Molekula supplies 3,3',4,4'-Diphenylsulfonetetracarboxylic dianhydride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: 1,3-Isobenzofurandione, 5,5'-sulfonylbis- · 3,3,4,4-diphenylsulfonetetracarboxylicdianhydride (DSDA) · 3,3',4,4'-Diphenylsulfonetetracarboxylic Dianhydride (purified by sublimation) · 4,4'-Sulfonyldiphthalic Anhydride · 4,4'-Sulfonyldiphthalic dianhydride · 5-(1,3-dioxoisobenzofuran-5-yl)sulfonylisobenzofuran-1,3-dione · 5-[(1,3-dioxo-2-benzofuran-5-yl)sulfonyl]-2-benzofuran-1,3-dione · 5,5'-Sulfonylbis(isobenzofuran-1,3-dione) · Bis-(3-phthalyl anhydride) sulfone · DSDA