NCIt definition : A synthetic hydroxyaminopentane amide agent that selectively inhibits the protease
of both human immunodeficiency virus 1 and 2. The incorporation of a basic amine into
the hydroxyethylene backbone improves its aqueous solubility and its oral bioavailability.;
Alternative definition : NCI-GLOSS: A drug that interferes with the ability of a virus to make copies of itself.;