corey lactone 4-phenylbenzoate corey lactone 4-phenylbenzoate corey lactone 4-phenylbenzoate is a synthetic intermediate used in the manufacture of some prostaglandin derivatives. it has been used as a false name by some designer drug manufacturers as a label to sell substituted cathinone derivatives after the banning of mephedrone and related drugs in some jurisdictions - but there is no evidence to suggest that corey lactone 4-phenylbenzoate has any stimulant effects in its own right. corey lactone 4-phenylbenzoateidentifiers iupac name (3ar,4s,5r,6as)-4-(hydroxymethyl)-2-oxohexahydro-2h-cyclopentafuran-5-yl 4-biphenylcarboxylate cas number31752-99-5pubchem cid2724295chemspider2006444comptox dashboard (epa)dtxsid00369124 echa infocard100.119.775 chemical and physical dataformulac21h20o5molar mass352.386 g·mol−13d model (jsmol)interactive image smiles o=c3o4c(oc(=o)c2ccc(c1ccccc1)cc2)(co)4c3 inchi inchi=1s/c21h20o5/c22-12-17-16-10-20(23)25-18(16)11-19(17)26-21(24)15-8-6-14(7-9-15)13-4-2-1-3-5-13/h1-9,16-19,22h,10-12h2/t16-,17-,18+,19-/m1/s1key:szjvifmpkwmgsx-akhdskfasa-n