“…Several analytical methods have been established for determination of nodakenin in plants and herbal prescriptions, including high‐performance liquid chromatography (HPLC) with photodiode array detection (Seo, Kim, & Shin, ; Seo et al, ; Yoon et al, ), HPLC‐diode array detector coupled with mass spectrometry (Ahn et al, ; Kim, Yang, et al, ; Liu, Li, Song, & Wei, ; Xu et al, ), HPLC tandem mass spectrometry (HPLC–MS/MS; Shen, Han, Huang, Zhu, & Lei, ; Cheng et al, ) and ultra‐performance liquid chromatography–electrospray ionization tandem mass spectrometry (UPLC‐ESI‐MS/MS; Lee, Shon, & Yoon, ). Moreover, we also noticed that some HPLC methods have been described for the pharmacokinetic study of nodakenin in rat and dog plasma, such as UV detection (Liu & Li, ; Zhang, Li, & Yang, ; Zhang & Yang, ) and fluorescence detection (Li & Sun, ).…”