3-Methyl-2-butanone N,N-dimethylhydrazone

(E)-2-(4-Bromomethyl-3-pentenyl)-2-methyl-1,3-dioxolane

3-甲基-2-丁酮

2-methyl-5-(2-methyl-1,3-dioxolan-2-yl)pent-2-enal

(chloro-5 methyl-4 pentene-3 yl)-2 methyl-2 dioxolanne-1,3