Hierarchical extraction and simultaneous determination of flavones and triterpenes in different parts of Trichosanthes kirilowii Maxim. by ultra-high-performance liquid chromatography coupled with tandem mass spectrometry.

•A hierarchical extraction method was established for determination flavonoids and triterpenes in T. kirilowii.•An UHPLC-MS/MS method was established for quantification multiple compounds.•Reveal the distribution of resource components in different parts of T. kirilowii.•The results could be useful for the rational utilization of T. kirilowii.