Phytochemical Characterization and Antioxidant and Enzyme Inhibitory Activities of Different Parts of Prinsepia utilis Royle

Table 2

Identification of major polyphenols in the flower, leaf, and stem of Prinsepia utilis Royle using the negative ion mode of UPLC-ESI-HRMS/MS.

Peak no.	Compounds	RT (min)	[M-H]^− (m/z)	Molecular formula	MS/MS fragment ions	Reference	Flower	Leaf	Stem
1	p-Coumaric acid	8.57	163.0395	C9H8O3	119.0493(100)	Standard	✓	✓	✓
2	Catechin	9.79	289.0726	C15H14O6	123.0443(83), 109.0285(100)	Standard	✓	✓	✓
3	Unknown	9.93	447.1882	C20H31O11	165.0919(100), 220.1104(73)		✓	✓	✓
4	Isoschaftoside	10.53	563.1423	C26H28O14	563.1414(100), 353.0666(20)	Standard	✓	✓	✓
5	Kaempferol-3-O-glucoside	10.95	447.0945	C21H20O11	284.0331(21), 285.0418(51)	Standard	✓	✓	✓
6	Rutin	11.54	609.1474	C27H32O16	300.0283(52), 609.1478(100)	Standard	✓	✓	✓
7	Quercetin-3-O-glucoside	11.97	463.0897	C21H20O12	300.0284(100), 271.0253(5)	Standard	✓	✓	✓
8	Kaempferol-3-O-rhamnosylhexose	12.40	593.1535	C27H30O15	284.0334(32), 593.1530(64)	[21]	✓	✓	✓
9	Quercetin 3-(6-O-acetyl-beta-glucoside)	12.45	505.1004	C23H22O13	300.0283(100), 301.0347(49)	Mass bank	✓	✓	✓
10	Isorhamnetin-3-O-rutinoside	12.60	623.1636	C28H32O16	315.0518(100), 623.1638(50)	Standard	✓	✓	✓
11	Kaempferol-3-O-hexoside	12.87	447.0947	C21H20O11	285.0391(36), 284.0334(100)	[21]	✓	✓	✓
12	Isorhamnetin-3-O-glucoside	13.05	477.1052	C22H22O12	314.0442(100), 477.1052(25)	Standard	✓	✓	✓

RT = retention time, ✓ = contains the substance.