... JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page. Bioorganic & Medicinal Chemistry. Volume 16, Issue 21, 1 November 2008, Pages 9546–9553. Cover image Cover image. ... 2, 3 and 4. Despite its modest efficiency against M. tuberculosis, ethambutol (EMB) ( Fig. 1) is still a first-line drug used against TB in part because its very low toxicity and its chemical simplicity. ...