Suppl. Table 1.

Retention time (RT) and MS/MS parameters of the thirteen analytes in MRM analysis.

Compound	RT (min)	Precursor ion (m/z)	Product ion (m/z)	Declustering Potential/V	Collision Energey/V
Calycosin	15.8	282.9	268.0	−45	−32
Calycosin-7-O-β-D-glucoside	10.0	447.0	284.9	46	25
Formononetin	24.7	268.9	197.1	96	51
Ononin	12.2	431.0	269.0	41	29
9,10-dimethoxyptercarpan-3-O-β-D-glucoside	13.7	485.1	323.0	121	31
Isomucronulatol 7-O-glucoside	13.8	463.1	286.1	−100	−22
Astragaloside IV	19.7	807.3	627.4	256	65
Astragaloside III	20.5	807.4	334.9	291	73
Carthamin	16.7	909.0	500.9	−100	−38
Hydroxysafflor yellow A	8.1	611.1	491.0	−100	−44
Anhydrosafflor yellow B	10.0	1043.1	449.1	−100	−40
Puerarin	9.0	415.0	295.1	−115	−32
Digoxin	18.6	789.4	651.5	81	21