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-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.
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.
PBT434 is a novel, brain-penetrant, small molecule inhibitor of α-synuclein aggregation. In transgenic animal models of Parkinson disease (A53T) and MSA (PLP-α-Syn), PBT434 reduced α-synuclein aggregation, preserved neurons and improved motor function. Glial cell inclusions were also reduced in a murine MSA model. PBT434 is thought to act by redistributing reactive iron across membranes, thereby blocking intracellular protein aggregation and oxidative stress. The affinity of PBT434 for iron is greater than that of α-synuclein but lower than that of iron trafficking proteins, e.g., ferritin.
N-Despropyl ropinirole is an active metabolite of the dopamine D2 receptor agonist ropinirole. It increases extracellular acidification rates in CHO cells expressing human dopamine D2, D3, and D4 receptors (EC50s = 0.63, 0.063, and 1.23 µM, respectively). N-Despropyl ropinirole is also a potential impurity found in commercial preparations of ropinirole.