optically inactive N-valyl-alanine

(S)-2-((s)-2-氨基-3-甲基丁酰胺)丙酸

(S)-2-((S)-2-(((benzyloxy)carbonyl)amino)-3-methylbutanamido)propanethioic S-acid

[1-[2',5'-bis-O-(tert-butyldimethylsilyl)-β-D-ribofuranosyl]-3-N-[3-N'-[valyl-alanylamino]propyl]thymine]-3'-spiro-5''-[4''-amino-1'',2''-oxathiole-2'',2''-dioxide]

(S)-3-[(S)-2-((S)-2-Benzyloxycarbonylamino-3-methyl-butyrylamino)-propionylamino]-3-((R)-2,2-dimethyl-[1,3]dioxolan-4-yl)-propionic acid ethyl ester