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) CAS 1401708 83 5 DC Chemicals Buy Dihexa (PNB 0408) 99% Powder Pharmacy Grade C27H44N4O5 Top Purity Senwayer Pharmaceutical Grade from Dingwang Technology (Wuhan) Co., Ltd. ECHEMI 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