Also available in 2 mg, 5 mg, 25 mg, 50 mg, 100 mg, 200 mg, 500 mg and bulk. Please contact Fisher for quotes.Peramivir Trihydrate (RWJ-270201) is a neuraminidase inhibitor (IC50 0.09 nM) which prevents normal processing of virus particles such that virus particles are not released from infected cells. Peramivir Trihydrate is a cyclopentane derivative with activity against influenza A and B viruses. Purity 99.6%