ricasetron ricasetron ricasetron (brl-46470) is a drug which acts as a selective antagonist at the serotonin 5-ht3 receptor. it has antiemetic effects as with other 5-ht3 antagonists, and also has anxiolytic effects significantly stronger than other related drugs, and with less side effects than benzodiazepine anxiolytics. however, it has never been developed for medical use. ricasetronclinical dataatc codenoneidentifiers iupac name endo-n-(8-methyl-8-azabicyclooct-3yl)-2,3-dihydro-3,3-dimethyl-indole-1-carboxamide cas number117086-68-7 ypubchem cid14850173iuphar/bps2302chemspider16736765 nuniir92jb88o88chemblchembl2105377 nchemical and physical dataformulac19h27n3omolar mass313.445 g·mol−13d model (jsmol)interactive image smiles cc1(cn(c2c1cccc2)c(=o)n3c4cc(c3)n4c)c inchi inchi=1s/c19h27n3o/c1-19(2)12-22(17-7-5-4-6-16(17)19)18(23)20-13-10-14-8-9-15(11-13)21(14)3/h4-7,13-15h,8-12h2,1-3h3,(h,20,23)/t13-,14+,15- nkey:ilxwrfdrnaktdd-qdmkhbrrsa-n n ny (what is this?) (verify)