GG522000: IdoA-GlcNS, 2Na (I0S0)A synthetic disaccharide and component of glycosaminoglycans Heparan sulfate (HS) and Heparin, components of proteoglycans. HS, in close proximity to cell surfaces or extracellular matrix proteins, plays essential physiological roles binding to hundreds of proteins. Heparan sulfate may play a role in SARS CoV 2 infection and virus binding to ACE2. Heparin is mainly found in mast cell secretory granules. Heparin Heparan Sulfate Disaccharide I0S0, 2Na;