Notes: Elvitegravir-d6 is intended for use as an internal standard for the quantification of elvitegravir (Item No. 17798) by GC- or LC-MS. Elvitegravir is a quinolone antibiotic that inhibits HIV-1 integrase (IC50 = 7.2 nM).{29011} It has antiviral activity against laboratory strains and clinical isolates of HIV-1 (EC50s = 0.1-1.26 nM) in MAGI cells and HIV-2 (EC50s = 0.3-0.9) in peripheral blood mononuclear cells (PBMCs).{29011,42943} Formulations containing elvitegravir have been used in the treatment of HIV infections.