Dihexa Wikipedia DIHEXA Dihexa & Tesofensine Bundle Pack: Amazon.com: Industrial & Scientific Electrical Conductivity and Solubility of KF in N,N Dimethylformamide up to 125 C Journal of Chemical & Engineering Data 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