Transcription factors are some of pharma's most elusive targets. But a new class of covalent peptides might finally crack them. Brian Paegel shares how his team is unlocking the "undruggable" and what Acheter Dihexa CAS 1401708 83 5 Rexar 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 Research Capsules Peptide Tech