hie-124 hie-124 hie-124 is an investigational nonbenzodiazepine drug being researched for its short acting hypnotic effects. hie-124identifiers iupac name ethyl 8-oxo-6,7-dihydro-5h-thiazolodiazepine-3-carboxylate pubchem cid11447815chemspider9622668uniijs6a6eqz44chemblchembl450014chemical and physical dataformulac10h12n2o3smolar mass240.28 g·mol−13d model (jsmol)interactive image smiles o=c(c1=csc(n1ccc2)=nc2=o)occ inchi inchi=1s/c10h12n2o3s/c1-2-15-9(14)7-6-16-10-11-8(13)4-3-5-12(7)10/h6h,2-5h2,1h3key:uxgpdpngdcoqby-uhfffaoysa-n