You need to demonstrate the purity of isolated compounds providing figures of their 13C NMR spectra and the results HPLC peak purity analysis (peak purity angle/peak purity threshold >1) in a supplement.

review的意见让提供碳谱，这个没问题； 但是后面液相峰的纯度分析(peak purity angle/peak purity threshold >1) 这个是什么意思呀？

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