What is "censavudine"

Censavudine (INN), is an investigational new drug being developed by Bristol Myers-Squibb for the treatment of HIV infection. Censavudine is a nucleoside reverse transcriptase inhibitor that is active against HIV resistant to both abacavir and tenofovir, making the drug a candidate for people with multi-drug resistant (MDR) strains of the virus. Censavudine is a derivative of stavudine (d4T), but is less toxic. It was originally developed at Yale University.