L-缬氨酰-甘氨酸

3,6-dimethoxy-2-methyl-5-propan-2-yl-2,5-dihydropyrazine

N-(苯磺酰基)缬氨酸

2-(Boc-氨基)-3-甲基丁基胺

(2S)-2-hydroxy-2,3-dimethylbutanoic acid