Optimized parameters of targeted compounds for quantitative analysis in MRM mode.

No.	Compound name	Formula	RT (min)	Molecular mass	Precursor ion (m/z)	Product ion (m/z)	Fragmentor (V)	Collision energy (V)	Monitoring ion
1	Ascorbic acid	C6H8O6	0.43	176.12	175.00	115.00	80	4	[M − H]−
2	Malic acid	C4H6O5	0.44	134.09	132.90	115.00	70	5	[M − H]−
3	Citric acid	C6H8O7	0.53	192.12	191.10	110.20	85	5	[M − H]−
4	Succinic acid	C4H6O4	0.56	118.09	117.00	73.00	70	12	[M − H]−
5	Quinic acid	C7H12O6	1.23	192.17	191.00	84.90	83	24	[M − H]−
6	Cyanidin-3-O-glucoside	C21H21O11	1.42	449.39	449.00	287.00	100	10	[M + H]+
7	Cyanidin-3-O-galactoside	C21H21O11	1.55	449.38	449.00	287.00	120	10	[M + H]+
8	Arbutin	C12H16O7	1.75	272.20	274.30	105.70	140	12	[M − H]−
9	Cyanidin-3-O-arabinoside	C20H19O10	2.03	419.81	421.20	287.00	140	21	[M + H]+
10	Chlorogenic acid	C16H18O9	2.22	354.31	352.80	191.10	100	10	[M − H]−
11	(+)-Catechin	C15H14O6	2.41	290.27	291.00	139.00	100	9	[M + H]+
12	(−)-Epicatechin	C15H14O6	2.49	290.27	291.00	139.00	110	13	[M + H]+
13	Quercetin	C15H10O7	2.55	302.24	301.00	151.00	148	23	[M − H]−
14	P-Coumaric acid	C9H8O3	2.69	164.16	162.90	119.00	75	16	[M − H]−
15	Astragalin	C21H20O11	2.87	448.40	447.00	284.00	165	30	[M − H]−
16	Benzoic acid	C7H6O2	3.04	122.12	121.00	77.00	75	15	[M − H]−
17	Oleanolic acid	C30H48O3	5.78	456.70	457.30	411.10	140	10	[M + H]+
18	Ursolic acid	C30H48O3	5.83	456.70	457.30	411.10	120	15	[M + H]+