英文别名N-[(4-Ethyl-2,3-dioxo-1-piperazinyl)carbonyl]-O-(2-methyl-2-propanyl)-D-threonine; D-α-(4-ethyl-2,3-dioxo-1-piperazinecarboxamido)-β-(S)-tert-butoxybutyric acid; D-Threonine, O-(1,1-diMethylethyl)-N-[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]-; (2R,3S)-3-(tert-Butoxy)-2-(4-ethyl-2,3-dioxopiperazine-1-carboxamido)butanoic acid; Cefrazon side chain 
