API and Pharmaceutical Intermediates Shaanxi Saien Biotechnology Co., Ltd. Dihexa: Premium Research Chemical, 10mg Per Sample Amino USA DIHEXA Research Capsules Peptide Tech 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 Smart Brothers DIHEXA PNB 0408 Nootropic MonsterKing 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