Table 1.

Analytical LC-MS/MS conditions for the identification of the three marker constituents and carbamazepine.

Constituents	Molecular Weight	RT 1 (min)	Mass Fragments		Collision Energy (eV)
			Q1 Mass (amu)	Q3 Mass (amu)
Scoparone	206.20	5.3	207.0 [M + H]+	151.0	−22
Geniposide	388.36	4.7	406.1 [M + NH4]+	227.1	−10
Rhein	284.22	6.9	282.9 [M − H]−	240.15	14
Carbamazepine (IS) 2	236.26	5.8	237.2 [M + H]+	194.1	−20

¹ RT, retention time. ² IS, Internal standard.