2050041-12-6

Ledipasvir-d6 is intended for use as an internal standard for the quantification of ledipasvir by GC- or LC-MS. Ledipasvir is an inhibitor of hepatitis C virus (HCV) non-structural protein 5A (NS5A).1,2 It inhibits viral replication in genotype 1a and 1b HCV replicon cells (EC50s = 0.031 and 0.004 nM, respectively). It also inhibits viral replication in genotype 2a, 2b, 3a, 4a, 4d, 5a, 6a, and 6e HCV replicon cells (EC50s = 0.11-530 nM).2 Lepidasvir acts synergistically with IFN-α, ribavirin , or GS-9669 and additively with GS-9451, simeprevir , daclatasvir , or PSI-7977 to inhibit viral replication in genotype 1a HCV replicon cells. Formulations containing ledipasvir have been used in combination therapy for the treatment of chronic HCV infection.

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1.Link, J.O., Taylor, J.G., Xu, L., et al.Discovery of ledipasvir (GS-5885): A potent, once-daily oral NS5A inhibitor for the treatment of hepatitis C virus infectionJ. Med. Chem.57(5)2033-2046(2014) 2.Cheng, G., Tian, Y., Doehle, B., et al.In vitro antiviral activity and resistance profile characterization of the hepatitis C virus NS5A inhibitor ledipasvirAntimicrob. Agents Chemother.60(3)1847-1853(2016)