Table 1 Chemical library of 29 flavonoids from Zizyphus jujuba var . inermis (Bunge) Rehder , Z. jujuba var . spinosa, Z. spina-christi (L.) Wild based on literature sources

No.	Compound names	Molecular weight	Fragment ions pattern (m/z)	States	Plant resources1)	References2)	No.	Compound names	Molecular weight	Fragment ions pattern (m/z)	States	Plant resources1)	References2)
1	quercetin 3-O-glucoside (isoquercitrin)^NFL3)	464	487, 465, 303	Confirmed (NMR, MS)	Fruits^b	9	16	6'''-O-vanilloylspinosin	758	781, 759, 609, 597, 447, 429, 411, 393	Confirmed (NMR, MS)	Seeds^c	6, 10
2	quercetin 3-O-galactoside (hyperoside)	464	487, 465, 303	Confirmed (NMR, MS)	Fruits^a,b,c	2, 3, 9	17	6'''-O-feruloylspinosin	784	807, 785, 623, 609, 447, 429, 411, 393	Confirmed (NMR, MS)	Seeds^c	1, 3, 4, 7, 8, 10, 11
3	quercetin 3-O-xylosyl(1→2)rhamnoside	580	603, 581, 449, 435, 303	Confirmed (NMR, MS)	Fruits^a,b Leaves^a,c	5, 9, 12	18	6'''-O-feruloylisospinosin	784	807, 785, 623, 609, 447, 429, 411, 393	Confirmed (NMR, MS)	Seeds^c	4, 6
4	quercetin -O-arabinosyl(1→2)rhamnoside	580	603, 581, 449, 435, 303	Confirmed (NMR, MS)	Fruits^a Leaves^a,c	5, 9, 12	19	6'''-O-sinapoylspinosin	814	837, 815, 653, 609, 447, 429, 411, 393	Confirmed (MS)	Seeds^c	1, 7
5	quercetin 3-O-rutinoside (rutin)	610	633, 611, 465, 449, 303	Confirmed (NMR, MS)	Fruits^a,b,c Leaves^a,c	2, 3, 5, 9, 12	20	apigenin 6-C-glucoside (isovitexin)	432	455, 433, 415, 397, 379, 351, 313	Confirmed (NMR, MS)	Seeds^c	4
6	quercetin 3-O-rhamnosyl(1→6)galactoside (quercetin 3-O-robinobioside)^NFL	610	633, 611, 465, 449, 303	Confirmed (NMR, MS)	Fruits^a,b	2, 9	21	apigenin 8-C-glucoside (vitexin)	432	455, 433, 415, 397, 379, 351, 313	Confirmed (MS)	Seeds^c	3
7	kaempferol 3-O-rutinoside (nicotiflorin)	594	617, 595, 449, 433, 287,	Confirmed (NMR, MS)	Fruits^a,b Leaves^a Seeds^c	6, 9, 11, 12	22	apigenin 6,8-di-C-glucoside (vicenin-2)	594	617, 595, 577, 559, 541, 523, 511, 385, 357	Confirmed (MS)	Seeds^c	11
8	kaempferol -O-rhamnosyl(1→6)galactoside (kaempferol 3-O-robinobioside)	594	617, 595, 449, 433, 287	Confirmed (NMR, MS)	Fruits^a Leaves^a	9, 12	23	apigenin-6-C-(2''-O-glucosyl) glucoside (2''-O-glucosylisovitexin)	594	617, 595, 433, 415, 397, 379	Confirmed (NMR, MS)	Seeds^c	4
9	kaempferol 3-O-glucosyl(1→2)rhamnoside	594	617, 595, 449, 433, 287	Confirmed (MS)	Fruits^a,c	2, 3	24	isovitexin 7-O-glucoside (saponarin)	594	617, 595, 433, 415, 397, 379	Confirmed (MS)	Seeds^c	3
10	quercetin 3-O-xylosyl(1→2)rhamnoside- 4'-O-rhamnoside	726	749, 727, 595, 581, 449, 303	Confirmed (NMR, MS)	Fruits^b	9	25	(-)-epicatechin	290	313, 291	Confirmed (MS)	Fruits^a	2
11	7-methoxyapigenin-6-C-glucoside (swertisin)	446	469, 447, 429, 411, 393	Confirmed (NMR, MS)	Seeds^c	3, 4, 8	26	(-)-epigallocatechin	306	329, 307	Confirmed (MS)	Leaves^a	12
12	7-methoxyapigenin- 6-C-(2''-O-glucosyl)glucoside (spinosin)	608	631, 609, 447, 429, 411, 393	Confirmed (NMR, MS)	Seeds^c	1, 3, 4, 6, 7, 8, 10, 11	27	(-)-epigallocatechin 3-O-gallate	458	481, 459, 307	Confirmed (MS)	Leaves^a	12
13	7-methoxyapigenin- 8-C-(2''-O-glucosyl)glucoside (isospinosin)	608	631, 609, 447, 429, 411, 393	Confirmed (NMR, MS)	Seeds^c	4, 6, 7, 10	28	phloretin 3',5'-di-C-glucoside	598	621, 599, 581, 563, 545, 527, 461	Confirmed (NMR, MS)	Fruits^b Leaves^a Seeds^c	9, 11, 12
14	6'''-O-p-hydroxybenzoylspinosin	728	751, 729, 609, 607, 567, 447, 429, 411, 393	Confirmed (MS)	Seeds^c	3	29	daidzein 8-C-glucoside (puerarin)	416	439, 417, 399, 381, 363, 335, 297	Confirmed (NMR, MS)	Seeds^c	4
15	6'''-O-p-coumaroylspinosin	754	777, 755, 609, 593, 447, 429, 393	Confirmed (NMR, MS)	Seeds^c	6, 7

^a, Z. jujuba ; ^b, Z. jujuba spina-christi (L.) Wild; ^c, Z. jujuba var. spinosa.
1, Bai et al., 2010; 2, Choi et al., 2012; 3, Choi et al., 2011; 4, Cheng et al., 2000; 5, Guo et al., 2011; 6, Lee et al., 2012; 7, Liao et al., 2012; 8, Liu et al., 2007; 9, Pawlowska et al., 2009; 10, Wu et al., 2011; 11, Yang et al., 2013; 12, Zhang et al., 2014.
NFL, new flavonoid in jujube leaves.