A hypothalamic tripeptide, enzymatic degradation product of OXYTOCIN, that inhibits the release of MELANOCYTE-STIMULATING HORMONES.

Synonyms: Melanocyte-Stimulating Hormone Release-Inhibiting Hormone, H-Pro-Leu-Gly-NH2, MSH Release-Inhibiting Hormone, Melanocyte-Stimulating Hormone Release-Inhibiting Factor, 9083-38-9, Prolylleucylglycinamide, MIF-1, Prolyl Leucyl Glycinamide, Melanostatin, Pro-Leu-Gly-NH2, Prol-Leu-Gly-NH2, MIF-I, Prol Leu Gly NH2, Pro-Leu-Glyamide, Prolyl-Leucyl-Glycinamide, MSH Release-Inhibiting Factor, Oxytocin (7-9)