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

Figure 2

MS/MS spectrum of adonifoline (a), senecionine (b), and senkirkine (c) which were pure standard and PA2 (d) which was presumed as emiline.

(a)

(b)

(c)

(d)