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Fast, sensitive and selective liquid chromatographic-tandem mass spectrometric determination of tumor-promoting diterpene eaters

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Journal of Chromatography A, 855 (2): 563-573 (сентября 1999)

Аннотация

A liquid chromatography–tandem mass spectrometry (LC–MS–MS) method was developed to detect tumor-promoting diterpene esters of the tigliane and ingenane types within plant extracts. Fractionation on a C18 high-performance liquid chromatography (HPLC) column was followed by MS–MS–multiple reaction monitoring (MRM) using the precursor→product ion pairs of m/z 311→293 and 293→265 for phorbol esters. The ion pairs m/z 313→295 and 295→267 were used for ingenol and deoxyphorbol esters. In a second run, the characteristic ions at m/z 311 and 313 were followed in precursor ion scan mode. These quasi-molecular ions were utilized to obtain full scan spectra of the compounds in product ion scan mode. Due to its selectivity, the present on-line method can be applied for plant cultivar selection and plant product control without time-consuming extraction procedures and complex bioassays.

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