brl-52537 brl-52537 brl-52537 is a drug which acts as a potent and highly selective κ-opioid agonist. it has neuroprotective effects in animal studies, and is used for research into potential treatments for stroke and heart attack as well as more general brain research. brl-52537identifiers iupac name 2-(3,4-dichlorophenyl)-1-ethanone cas number130497-33-5 ypubchem cid6603740chemspider5036053 ncomptox dashboard (epa)dtxsid00462129 chemical and physical dataformulac18h24cl2n2omolar mass355.30 g·mol−13d model (jsmol)interactive image smiles c1ccn((c1)cn2cccc2)c(=o)cc3=cc(=c(c=c3)cl)cl inchi inchi=1s/c18h24cl2n2o/c19-16-7-6-14(11-17(16)20)12-18(23)22-10-2-1-5-15(22)13-21-8-3-4-9-21/h6-7,11,15h,1-5,8-10,12-13h2/t15-/m0/s1 nkey:ghccbwmzkjqgls-hnnxbmfysa-n n ny (what is this?) (verify)