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zhangql8207(金币+4):十分感谢,我去查查看~ 2010-04-22 14:34
CA里面给你查了下,有一篇文献
Registry Number: 64790-67-6
Rotation (-).
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Formula: C20 H22 O7
CA Index Name: 7H-Furo[3,2-g][1]benzopyran-7-one, 4-methoxy-9-[(2,2,5,5-tetramethyl-1,3-dioxolan-4-yl)methoxy]-, (-)-
Other Names: Byakangelicin acetonide |
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