Table 2.

Identification of flavones in hairy roots S. baicalensis, S. lateriflora, S. przewalskii and S.pycnoclada by HPLC-MS/MS.

№	Compounds	Molecular Mass	MRM Transition, m/z
1	baicalin	446	447.1 → 271.1
2	wogonoside	460	461.1 → 285.1
3	baicalein	270	271.1 → 123.1
4	wogonin	284	285.1 → 270.1
5	chrysin	254	255.1 → 153.1
6 *	chrysin-6-C-β-d-glucoside	416	417.1 → 281.1
7 *	chrysin-8-C-β-d-glucoside
8	tenaxin	344	345.1 → 330.1
9	viscudulin III 6-O-β-d-glucoside	508	509.1 → 347.1
10	apigenin	270	271.1 → 153.1
11	apigetrin (apigenin-7-O-β-d-glucopuranoside)	432	433.1 → 271.1
12 *	isocarthamidin-7-O-β-d-glucuronide	464	465.1 → 289.1
13 *	carthamidin-7-O-β-d-glucuronide
14	scutellarin	462	463.1 → 287.1
15	chrysin-7-O-β-d-glucuronide	430	431.1 → 255.1
16	baicalein-7-O-β-d-glucoside	432	433.1 → 415.1
17	naringenin	272	273.1 → 153.1
18	oroxylin A	284	285.1 → 267.1
19	scullcapflavone II	374	375.1 → 345.1

* Structural isomers. In the hairy roots of S. baicalensis, 1–16 were found; S. pycnoclada, 1–16; S. przewalskii, 1–5, 7–14, 16–19; S. lateriflora, 1–7, 9–16, 18.