Synonyms: 2-[(2S,3S)-3-[[(1,1-Dimethylethoxy)carbonyl]amino]-2-hydroxy-4-phenylbutyl] -2-[[4-(2-pyridinyl)phenyl]methyl]hydrazinecarboxylic Acid 1,1-Dimethylethyl Ester;Des-N-(methoxycarbonyl)-L-tert-leucine Bis-Boc Atazanavir;dimethylethoxy)carbonyl]amino]-2-hydroxy-4-;Hydrazinecarboxylic acid, 2-[(2S,3S)-3-[[(1,1-;phenylbutyl]-2-[[4-(2-pyridinyl)phenyl]methyl]-,1,1-dimethylethyl ester;Hydrazinecarboxylic acid, 2-[(2S,3S)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-4-phenylbutyl]-2-[[4-(2-pyridinyl)phenyl]methyl]-, 1,1-dimethylethyl ester