814-78-8
2-甲基-1-丁烯-3-酮
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123-31-9
1,4-苯二酚
→
18229-58-8
1-(2,5,6-trimethyl-3,4-dihydropyran-2-yl)ethanone
115-19-5
2-甲基-3-丁炔-2-醇
106-99-0
1,3-丁二烯