nelivaptan nelivaptan nelivaptan (inn) (developmental codename ssr-149,415) is a selective, orally active, non-peptide vasopressin receptor antagonist selective for the v1b subtype. the drug had entered clinical trials for treatment of anxiety and depression. in july 2008, sanofi-aventis announced that further development of this drug had been halted. nelivaptanclinical dataroutes ofadministrationoralatc codenoneidentifiers iupac name (2s,4r)-1--4-hydroxy-n,n-dimethyl-pyrrolidine-2-carboxamide cas number439687-69-1 npubchem cid9895468iuphar/bps2202chemspider8071134 yunii3ty57mq4oachemblchembl582857 ycomptox dashboard (epa)dtxsid7047358 echa infocard100.210.987 chemical and physical dataformulac30h32cln3o8smolar mass630.11 g·mol−1 inchi inchi=1s/c30h32cln3o8s/c1-32(2)28(36)24-15-19(35)17-33(24)30(21-8-6-7-9-25(21)41-4)22-14-18(31)10-12-23(22)34(29(30)37)43(38,39)27-13-11-20(40-3)16-26(27)42-5/h6-14,16,19,24,35h,15,17h2,1-5h3/t19-,24+,30+/m1/s1 ykey:njxzwiimwneogj-wewkhqnjsa-n y ny (what is this?) (verify)