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 BAM15 Research Capsules Peptide Tech Acheter Dihexa CAS 1401708 83 5 Rexar Big news for peptides! In July, the FDA will meet to evaluate the most commonly used peptides for FDA authorized compounding.