stac-9 stac-9 stac-9 is an experimental drug that was developed by glaxosmithkline as a small-molecule activator of the sirtuin subtype sirt1, with potential applications in the treatment of diabetes. stac-9identifiers iupac name n-pyridin-4-yl-6--2,3-dihydropyrrolopyridine-1-carboxamide pubchem cid68340804uniimg7ttl8ycychemical and physical dataformulac20h15f3n4omolar mass384.362 g·mol−13d model (jsmol)interactive image smiles c1cn(c2=c1c=cc(=n2)c3=cc(=cc=c3)c(f)(f)f)c(=o)nc4=cc=nc=c4 inchi inchi=1s/c20h15f3n4o/c21-20(22,23)15-3-1-2-14(12-15)17-5-4-13-8-11-27(18(13)26-17)19(28)25-16-6-9-24-10-7-16/h1-7,9-10,12h,8,11h2,(h,24,25,28)key:wfpoejcaczidsn-uhfffaoysa-n