Dihexa Bioss Dihexa Capsules 10mg for Research Licensed Peptides 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 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 Dihexa (PNB 0408) Angiotensin IV analogue CAS NO.:1401708 83 5 GlpBio Dihexa c Met chemical CAS 1401708 83 5 Selleck