chloroquinoxaline sulfonamideListen to pronunciation(KLOR-oh-kwih-NOK-sah-leen sul-FAH-nuh-MIDE)A substance being studied in the treatment of cancer. It is a type of topoisomerase inhibitor. Also called CQS.Search NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#