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Two Isoflavones from Iris songarica SchrenkKeywords: Iris songarica , isoflavone , irilinA , irisone B Abstract: Two isoflavone, irilin A and irisone B were isolated from Iris songarica and their structures were determined by 1 and 2 D-NMR, IR, UV and MS. The effect of solvent on 1H-NMR spectra of irisone B have been studied.
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