exp-561 exp-561 exp-561 is an investigational drug that acts as an inhibitor of the reuptake of serotonin, dopamine, and norepinephrine. it was developed in the 1960s by du pont and was suggested as a potential antidepressant but failed in trials and was never marketed. exp-561clinical dataroutes ofadministrationoralatc codenonelegal statuslegal status in general: uncontrolled identifiers iupac name 4-phenylbicyclooctan-1-amine cas number10206-89-0 yhydrochloride: 10207-08-6 ypubchem cid27696chemspider25769uniihydrochloride: 6s9h885mkf ycomptox dashboard (epa)dtxsid20144571 chemical and physical dataformulac14h19nmolar mass201.313 g·mol−13d model (jsmol)interactive image smiles nc12ccc(cc1)(cc2)c3=cc=cc=c3 inchi inchi=1s/c14h19n.clh/c15-14-9-6-13(7-10-14,8-11-14)12-4-2-1-3-5-12;/h1-5h,6-11,15h2;1hkey:lthjbdqsfigmaz-uhfffaoysa-n