Rosthornin B is a kind of natural product derived from the herbs of Rabdosia rosthornii.

2-Methyltetrahydrofuran-3-one also known as fema 3373 or tetrahydro-2-methyl-3-furanone belongs to the class of organic compounds known as furanones.

Tyroserleutide (YSL), isolated from the degradation products of porcine spleen, is a small molecular tripeptide which inhibits tumor growth both in vitro and in vivo.