cyanonilutamide cyanonilutamide cyanonilutamide (developmental code name ru-56279) is a nonsteroidal antiandrogen which was never marketed. both ru-56187 and ru-58841 appear to be prodrugs of cyanonilutamide in vivo in animals. it has relatively low affinity for the androgen receptor but nonetheless shows significant antiandrogenic activity in animals. cyanonilutamideclinical dataother namesru-56279drug classnonsteroidal antiandrogenidentifiers iupac name 4-(4,4-dimethyl-2,5-dioxoimidazolidin-1-yl)-2-(trifluoromethyl)benzonitrile cas number143782-20-1 ypubchem cid11162285chemspider9337385unii6pag4tc385chemblchembl146858chemical and physical dataformulac13h10f3n3o2molar mass297.237 g·mol−13d model (jsmol)interactive image smiles cc1(c(=o)n(c(=o)n1)c2=cc(=c(c=c2)c#n)c(f)(f)f)c inchi inchi=1s/c13h10f3n3o2/c1-12(2)10(20)19(11(21)18-12)8-4-3-7(6-17)9(5-8)13(14,15)16/h3-5h,1-2h3,(h,18,21)key:cycklvaqenoqpg-uhfffaoysa-n