methyl 2-ethenyl-2-methyl-5-trimethylsilylpentanoate

N-(4-bromo-2-iodo-6-methylphenyl)-2-methylbut-2-enamide

N-(4-bromo-2-iodo-6-methylphenyl)-N,2-dimethylbut-2-enamide

(3aR,4R,6E,9S,10Z,11aR)-9-乙酰氧基-6,10-二甲基-3-亚甲基-2-氧代-2,3,3A,4,5,8,9,11A-八氢环癸并[b]呋喃-4-基(2E)-4-羟基-2-(羟基甲基)-2-丁烯酸酯

methyl 2-methylbut-3-enoate