erbulozole erbulozole erbulozole (r55104) is a congener of the microtubule inhibitor tubulozole. it is undergoing phase i clinical trials as a chemotherapeutic agent. erbulozoleclinical dataother nameserbuzoleidentifierscas number124784-31-2pubchem cid9934372chemspider8110000unii78xgn2k5rxchemical and physical dataformulac24h27n3o5smolar mass469.56 g·mol−13d model (jsmol)interactive image smiles ccoc(=o)nc1=cc=c(c=c1)sc2co(o2)(cn3c=cn=c3)c4=cc=c(c=c4)oc inchi inchi=1s/c24h27n3o5s/c1-3-30-23(28)26-19-6-10-22(11-7-19)33-15-21-14-31-24(32-21,16-27-13-12-25-17-27)18-4-8-20(29-2)9-5-18/h4-13,17,21h,3,14-16h2,1-2h3,(h,26,28)/t21-,24+/m1/s1key:klepcgbexocigs-qppbqgqzsa-n (verify) synthesis erbulozole synthesis: lednicer book 6 (drugs of the future citation).