MedChemExpress Abacavir sulfate (Abacavir Hemisulfate) is a competitive, orally active nucleoside reverse transcriptase inhibitor. Abacavir sulfate can inhibits the replication of HIV. Abacavir sulfate shows anticancer activity in prostate cancer cell lines. Abacavir sulfate can trespass the blood-brain-barrier and suppresses telomerase activity.