Table 1.

Transitions, cluster voltage, collision voltage and chamber injection voltage of seven compounds.

Compounds	m/z	DP	CE	CXP
Oleanolic acid	479.3→435.5	70	28	17
Kaempferol	287.1→153	70	51	10
Isofraxidin	223.1→206.3	60	40	9
Eleutheroside B	394.8→231.8	70	40	17
Eleutheroside E	765.3→603.1	70	62	23
Hyperoside	487→324	70	43	17
Protocatechuate	155→92.9	70	21	17