Somatostatin, also known as growth hormone-inhibiting hormone, is a naturally-occurring peptide hormone of 14 or 28 amino acid residues that regulates the endocrine system. It is secreted by the D cells of the islets to inhibit the release of insulin and glucagon, and is also generated in the hypothalamus, where it inhibits the release of growth hormone and thyroid-stimulating hormones from the anterior pituitary.Somatostatin is a tetradecapeptide which can suppress the growth hormone (GH) secretion and control the pituitary hormone secretion in human CNS.

2β-Methoxy-2-deethoxy-8-O-deacylphantomolin-8-O-tiglinate is a sesquiterpene lactone that can be isolated from Elephantopus mollis. 2β-Methoxy-2-deethoxy-8-O-deacylphantomolin-8-O-tiglinate exhibits cytotoxicity in mouse neuroblastoma B104 cells with an IC50 of 3.85 μM.

pTH (1-44) (human)|Parathyroid Hormone (1-44), human