SKF1 is a suppressor of the ability of FK506. SKF1 inhibits cell growth in the presence of high levels of NaCl, induces cell death in low salt conditions, interacts directly with yeast mitochodria.
SKF 100398, also known as d(CH2)5Tyr(Et)VAVP, is a particular analog of arginine vasopressin (AVP). It acts as a specific antagonist, specifically targeting the antidiuretic effect caused by both exogenous and endogenous AVP.
SKF-107457 is an HIV protease type 1 inhibitor. It is a hexapeptide substrate analog with the scissile bond being replaced by a hydroxy ethylene isostere.