Identified compounds in Iris..

Peak No.	t_R (min)	UV λ_max (nm)	*[M+H]⁺ (m/z)*	Fragment ions (+)	*[M-H]^ˉ (m/z)*	Fragment ions (-)	Compound
1	16.22	243,261,366	ND^a	ND^a	421	405,331,301,271,159,125,111	Mangiferin
2	29.09	235,293	391	307,267,248,43	389	227,182	Picied
3^m	36.95	217,263,339(sh)	463	344,301,286,258	461	446,397,365,283,255,233,195,167	Tectorigenin 4`- glucoside
4^m	38.15	215,265,339(sh)	523	361,346,310,282	521	491,359,343,313	Iridin
5	41.06	261,319	475	292,290,163,141	ND^a	ND^a	Germananaism B
6	41.76	246,262	505	313,248,175	ND^a	ND^a	Germananaism A
7	45.73	246,269	461	404,354,298,270,218,147	ND^a	ND^a	Irilone 4`-glucoside
8	47.59	265	477	399,217,183,157	475	299,297	Irisolidone 7-glucoside
9	52.02	246,259,315(sh)	313	298,268,245,217,193,151,145	ND^a	NDa	Irisolone
10^m	57.92	266	361	345,315,303,245,208,193,107	359	344,328,329,314,285,258,270,191	Irigenin

t_R: 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 3: Identified compounds in Iris germanica by HPLC-DAD-ESI-MS/MS.

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