acridine carboxamide acridine carboxamide acridine carboxamide is a chemotherapy agent that is being studied in the treatment of cancer. it belongs to the family of drugs called topoisomerase inhibitors. acridine carboxamideidentifiers iupac name n--4-acridinecarboxamide cas number89459-25-6pubchem cid107805chemspider96954unii0n3v8r4e13comptox dashboard (epa)dtxsid60237739 chemical and physical dataformulac8h19n3omolar mass173.260 g·mol−13d model (jsmol)interactive image smiles cn(c)ccnc(=o)c1=cc=cc2=cc3=cc=cc=c3n=c21 inchi inchi=1s/c18h19n3o/c1-21(2)11-10-19-18(22)15-8-5-7-14-12-13-6-3-4-9-16(13)20-17(14)15/h3-9,12h,10-11h2,1-2h3,(h,19,22)key:xbgnerskekdzds-uhfffaoysa-n while the agent was well tolerated in phase ii clinical trials, it did not show efficacy when tested against various types of cancers.