Table 4 | Identified compounds in Iris spuria by..

Peak No.	tR (min)	UV λmax (nm)	*[M+H]+ (m/z)*	Fragment ions (+)	*[M-H]ˉ (m/z)*	Fragment ions (-)	Compound
1	8.7	206,253,288	ND^a	ND^a	329	295,255,204,186,155,108,85	Irispurinol
2	13.08	262	ND^a	ND^a	785	469,452,344,236,204,147	Tectorigenin 4`-gentiobioside-7-glucoside
3	14.80	210,263,329(sh)	625	509,232,109	623	461,446,359,298,90	Tectoridin 4`-glucoside
4	15.40	231,264	ND^a	ND^a	653	613,532,513,490,442,387 ,363,310,254,231,182	Iristectoregenin B 4`-diglucoside
5^m	29.07	263	625	621,463,356 ,331,301,273	623	477,419,257,213,155	Tectorigenin 7-diglucoside
6	30.80	229,266,340(sh)	493	331,324,316 ,256,215,180,168	ND^a	ND^a	Iristectorin B
7	31.74	260	433	392,352,348,304,280, 271,243,225,153,130	ND^a	ND^a	Gentenstein 7-glucoside
8^m	33.26	264,329(sh)	463	301,183,103,85	461	446,283,227,162	Tectoridin
9^m	37.26	217,263,339(sh)	463	343,329,301 ,286,127,109,85	461	446,283,255,239,195,167	Tectorigenin 4`-glucoside
10	40.85	257	853^b	678,652,610 ,490,471,453	829	707,656,227,64	Iridalglycoside 5b/6c
11	41.36	260	855^b	652,597,547,521,490 ,454,393,309,262	830	668,601,476,315,258	Iridalglycoside 7/8
12^m	54.12	265,314	301	285,281,268, 189,168,133,122	299	269,55	Tectorigenin
13	57.46	243,264,334(sh)	ND^a	ND^a	301	252,207,80	5,8,2`-trihydroxy-7-methoxyflavnone

tR: Retention time.
m: Marker compounds.
sh: shoulder peak.
aThe ion signals of this component investigated were not detected in this ion mode.
bThis fragment ion was [M+Na]⁺.

Table 4: Identified compounds in Iris spuria by HPLC-DAD-ESI-MS/MS.

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