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Norisoboldine (1,9-dihydroxy-2,10-dimethoxynoraporphine) is one of the major bioactive isoquinoline alkaloids in Linderae radix, a commonly used Chinese herbal medicine. The aim of this study is to(More)
Norisoboldine (NIB) is one of the main bioactive isoquinoline alkaloids in Linderae Radix. A rapid, selective and sensitive method using UPLC-ESI/MS was first developed for simultaneous determination(More)