mk-4409 mk-4409 mk-4409 is an experimental drug which acts as a potent and selective inhibitor of the enzyme fatty acid amide hydrolase (faah), with an ic50 of 11 nm, and both analgesic and antiinflammatory effects in animal studies. it was studied for the treatment of neuropathic pain and progressed to early stage human clinical trials by 2009. mk-4409clinical dataatc codenonelegal statuslegal status us: investigational new drug identifiers iupac name 2-pyridin-2-yl]propan-2-ol cas number1207745-58-1 ypubchem cid53341130chemspider25069631unii77gx6mu9zlchemblchembl1812717chemical and physical dataformulac22h17fn3o2smolar mass406.46 g·mol−13d model (jsmol)interactive image smiles c3nc(c(o)(c)c)ccc3-c1nc(-c4ccc(f)cc4)oc1sc(nc2)ccc2cl inchi inchi=1s/c22h17clfn3o2s/c1-22(2,28)17-9-5-14(11-25-17)19-21(30-18-10-6-15(23)12-26-18)29-20(27-19)13-3-7-16(24)8-4-13/h3-12,28h,1-2h3key:dbzmcsviitxlcc-uhfffaoysa-n