Ascamycin is a 5'-O-sulfonamide ribonucleoside antibiotic produced by Streptomyces spp.

REV 5901A (REV 5901 HCl) is an orally active leukotriene receptor antagonist and 5-lipoxygenase inhibitor with antimicrobial activity that attenuates colon cancer growth in mice.

Lasalocid sodium is a cationic ionophore antibiotic obtained from Streptomyces lasaliensis that, among other effects, dissociates the calcium fluxes in muscle fibers.