The latter easily converts to zidovudine 4 ( also known as azidothymidine or AZT ) used among others in the treatment of AIDS .
Zidovudine 4 ( also known as azidothymidine or AZT ) is an important antiviral drug .
The latter easily converts to zidovudine 4 ( also known as azidothymidine or AZT ) , an important antiviral drug , used among others in the treatment of AIDS .