cycloheximide

n.
A colorless crystalline compound, C₁₅H₂₃NO₄, that is used as an agricultural fungicide.

An antibiotic produced by Streptomyces griseus that inhibits protein synthesis. It is too toxic and nonselective for common clinical use, but is used in treatment of cancers and management of graft-versus-host reactions following transplantation. Also used agriculturally for the control of fungal diseases of plants and turf and as a bacterial inhibitor in selective media for culturing fungi.