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 Sucrose Solubility in Binary Liquid Mixtures Formed by WaterMethanol, WaterEthanol, and MethanolEthanol at 303 and 313 K Journal of Chemical & Engineering Data Solubility behavior and thermodynamic analysis of hexamethylenetetramine in alcohol water mixed solvents (methanol ethanol 1 propanol isopropanol + water) from 283.15 K to 323.15 K ScienceDirect