Half Life Cambridge MedChem Consulting Dihexa (also known as PNB 0408) is an experimental small molecule derived from angiotensin IV. It was engineered to cross the bloodbrain barrier and has shown synaptogenic effects in preclinical models. The often quoted Frontiers Hepatocyte growth factor mimetic protects lateral line hair cells from aminoglycoside exposure Stem cell, Granulocyte Colony Stimulating Factor and or Dihexa to promote limb function recovery in a rat sciatic nerve damage repair model: Experimental animal studies ScienceDirect