S.pombe lumazine synthase-IN-1 is an inhibitor of lumazine synthases with Ki values of 243 μM and 9.6 μM for Schizosaccharomyces pombe and Mycobacterium tuberculosis lumazine synthases, respectively[1]. [1]. Arindam Talukdar, et al. Discovery and Development of a Small Molecule Library With Lumazine Synthase Inhibitory Activity. J Org Chem. 2009 Aug 7;74(15):5123-34.