hep·a·ran sulfate 
(hĕpə-răn)
(hĕpə-răn)n.
A glycosaminoglycan found on cell surfaces and basement membranes in mammals that regulates a wide variety of biological processes, including angiogenesis and blood coagulation. Also called heparitin sulfate.
[HEPAR(IN) (to which it is close in structure) + -AN2.]