chloroquinoxaline sulfonamide
(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.
The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.
Updates regarding government operating status and resumption of normal operations can be found at opm.gov.