Cyclobutane 1,3 diamine is a highly effective small molecule scaffold that offers both conformational restriction and optimized metabolic stability. Notably, Pfizer's Abrocitinib, a Enamine Ltd. AngIV Analog Dihexa Rescues Cognitive Impairment and Recovers Memory in the APP PS1 Mouse via the PI3K AKT Signaling Pathway Dihexa 10mg Capsules Cognitive Research Support Peptide Pure Bio Labs Scalable production of tissue like vascularized liver organoids from human PSCs Experimental & Molecular Medicine Temporal proteomic profiling of iPSC derived human liver organoids reveals optimal maturation for drug metabolism and toxicology Scientific Reports