Selective reverse transcriptase inhibitor. Exhibits 100-fold selectivity for HIV reverse transcriptase over DNA polymerase α. Suppresses HIV-1 replication and enhances cell viability in HIV-1 infected T cells. Attenuates growth of multiple myeloma (MM) cells in vitro and reduces growth of MM tumor xenografts in mice. Increases differentiation iPSCs into cortical neurons and reduces the over-proliferation of neural precursors. Orally bioavailable and brain penetrant. Antiretroviral agent. Also decreases CRISPR-mediated homology directed repair (HDR) efficiency. Purity 99%. MW (observed): 267.24