methyl 2-benzamido-3-methylbut-2-enoate

2-乙酰氨基-3-甲基-巴豆酸

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

2-azido-N,N,3-trimethylbutanamide

2-acetamido-N,N,3-trimethylbut-2-enamide