cinanserin cinanserin cinanserin (inn) is a 5-ht2a and 5-ht2c receptor antagonist which was discovered in the 1960s. cinanserinclinical dataatc codenoneidentifiers iupac name (2e)-n-(2-phenyl)-3-phenylacrylamide cas number1166-34-3 ypubchem cid5475158chemspider4584027 nuniiki6j9oy7a3chebichebi:145999chemblchembl18786 ncomptox dashboard (epa)dtxsid7045653 echa infocard100.220.552 chemical and physical dataformulac20h24n2osmolar mass340.49 g·mol−13d model (jsmol)interactive image smiles cn(c)cccsc1=cc=cc=c1nc(=o)\c=c\c2=cc=cc=c2 inchi inchi=1s/c20h24n2os/c1-22(2)15-8-16-24-19-12-7-6-11-18(19)21-20(23)14-13-17-9-4-3-5-10-17/h3-7,9-14h,8,15-16h2,1-2h3,(h,21,23)/b14-13+ nkey:rsuvymgadvxgou-buhfosprsa-n n ny (what is this?) (verify) the molecule is an inhibitor of the 3c-like protease of sars-coronavirus (sars).