Skip to main content
. 2013 Nov 11;8(11):e78622. doi: 10.1371/journal.pone.0078622

Figure 2. Typical RRLC-DAD-QQQ MS/MS chromatograms of 15 chemical markers in YPFS.

Figure 2

(A): The identification of calycosin-7-O-β-D-glucoside (2), scopoletin (13), ononin (4), calycosin (1), astragaloside III (6), astragaloside IV (7), astragaloside II (5), formononetin (3), aesculetin (IS1), Rg1 (IS2) and chrysin (IS3) was made by a MS detector in the negative mode. Representative chromatograms are shown, n = 3; (B): The identification of prim-O-glucosylcimifugin (11), 5-O-methylvisammioside (12), psoralen (14), isopsoralen (15), atractylenolide III (10), atractylenolide II (9), atractylenolide I (8), esculin (IS4), crytotanshinone (IS5) was made by a MS detector in the positive mode. The chemical markers were numbered according to Fig. S1. Representative chromatograms are shown, n = 3.