methyl 2-(benzylideneamino)-3-methylbut-2-enoate

methyl 2-acetylimino-3-methylbutanoate

2-diazonio-1-methoxy-3-methylbut-1-en-1-olate

缬氨酰-缬氨酸

methyl 2-[[3-(1H-indol-3-yl)-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoyl]amino]-3-methylbutanoate