Identification and Simultaneous Determination of the Main Toxical Pyrrolizidine Alkaloids in a Compound Prescription of Traditional Chinese Medicine: Qianbai Biyan Tablet

Figure 1

Chromatogram of total MS/MS fragment ions of 336 of eight Senecio plants. According to identification, PA4 is senecionine and E, F, and G are three other PAs which are the isomers of senecionine. Plant materials are as follows: 1, Senecio scandens; 2, Senecio argunensis; 3, Senecio cannabifolius var. integrifolius; 4, Senecio cannabifolius; 5, Senecio vulgaris; 6, Tephroseris phaeantha; 6, Senecio laetus; and 8, Senecio nemorensis.