Pyridine Sulfur Trioxide Complex

As sulfur trioxide provider for the reaction, In Preparation of Intermediates Intermediate Example 1.6-Fluoro-2,3-dihydrobenzofuran-5-sulfonyl chloride, In manufacture of Hydrogel containing polymer nanofibers introduced with sulfate groups used as a biomaterial or artificial extracellular matrix in the production of artificial organs and artificial tissues by culturing cells in an in vitro environment.