ly-344545 ly-344545 ly-344,545 is a research drug developed by the pharmaceutical company eli lilly, which acts as an antagonist for the metabotropic glutamate receptor subtype mglur5. it is an epimer of another metabotropic glutamate receptor antagonist, the mglur2/3-selective ly-341,495. ly-344545identifiers iupac name (αs)-α-amino-α--9h-xanthene-9-propanoic acid cas number201851-20-9pubchem cid10618042chemspider8793407unii9zsq1c4209chemical and physical dataformulac20h19no5molar mass353.374 g·mol−13d model (jsmol)interactive image smiles c1ccc2c(c1)c(c3ccccc3o2)c(4c4c(=o)o)(c(=o)o)n inchi inchi=1s/c20h19no5/c21-20(19(24)25,15-9-13(15)18(22)23)10-14-11-5-1-3-7-16(11)26-17-8-4-2-6-12(14)17/h1-8,13-15h,9-10,21h2,(h,22,23)(h,24,25)/t13-,15-,20+/m1/s1key:vlzbrvjvccnprj-rcdcfzsisa-n (verify)