2-5A pentasodium

2-5A (5'-O-Triphosphoryladenylyl- (2'→5') -adenylyl- (2'→5') -adenosine) pentasodium is a 5'-triphosphorylated (2',5') oligo-adenylate. Acting as an immune mediator, 2-5A pentasodium enhances the activity of RNase L. It degrades viral mRNA and inhibits protein synthesis by binding to RNase L and activating its ribonuclease function. This compound is useful in research related to respiratory syncytial virus (RSV) and cancer.