sp-5

Splenopentin diacetate (Splenin pentapeptide (32-36)) is a synthetic immunomodulating peptide and can reproduce the biological activities of splenin and thymic hormone thymopoietin.

Sp-Uridine-5'-O-(1-thiotriphosphate) (Sp-UTP-α-S) acts as a nucleotide agonist for purinergic Y2 (P2Y2) and P2Y4 receptors, efficiently inducing inositol phosphate accumulation in 1321N1 astrocytoma cells that express these receptors, with half-maximal effective concentrations (EC50s) of 14 µM and 81 µM, respectively.

L-5-BromoTryptophan (5-BrW) is an analog of the tryptophan (Trp) effector and inhibits the gelation of hemoglobin S.

Substance P (3-11), an SP fragment peptide capable of crossing the blood-brain barrier (BBB), induces contraction in guinea pig ileum and facilitates chemotaxis in human monocytes [1] [2] [5].