lpk-26 lpk-26 lpk-26 is a potent and selective κ-opioid agonist, and has analgesic effects. lpk-26identifiers iupac name 2-(3,4-dichlorophenyl)-n--n-methylacetamide cas number492451-07-7 ypubchem cid10043746chemspider8219310 nuniihte2k3d35yecha infocard100.161.432 chemical and physical dataformulac18h24cl2n2omolar mass355.30 g·mol−13d model (jsmol)interactive image smiles cc(c)(cn1cc=cc1)n(c)c(=o)cc2=cc(=c(c=c2)cl)cl inchi inchi=1s/c18h24cl2n2o/c1-13(2)17(12-22-8-4-5-9-22)21(3)18(23)11-14-6-7-15(19)16(20)10-14/h4-7,10,13,17h,8-9,11-12h2,1-3h3/t17-/m1/s1 nkey:qfaiammfkkyctl-qgzvfwflsa-n n ny (what is this?) (verify)