Table 3.

Flavonoid compounds tentatively identified in the chestnut Cs/1/1 alcoholic extract and its Cs/2/1 and Cs/3/2 fractions. Rt = retention time. Base peak fragments are reported in bold. ● Detected (Grey color box = not detected).

Peak	Rt	Tentative Assignment	Formula	[M-H]− Found (m/z)	Error (ppm)	Cs/1/1	Cs/2/1	Cs/3/2
46	9.595	Quercetin pentosyl-hexoside	C26H28O16	595.1318	2.3	●		●
50	9.969	Quercetin hexuronide I	C21H18O13	477.0686	2.6	●		●
51	9.911	Quercetin 3-O-hexoside I	C12H20O12	463.0893	2.4	●		●
52	10.009	Rutin	C27H30O16	609.1479	2.9	●		●
53	10.067	Quercetin 3-O-hexoside II	C12H20O12	463.0892	2.2	●		●
54	10.315	Quercetin hexuronide II	C21H18O13	477.0680	1.1	●		●
55	10.315	Quercetin 3-O-hexoside III	C12H20O12	463.0890	1.7	●		●
57	10.515	Quercetin 3-O-pentoside	C20H18O11	433.0786	1.5	●		●
60	10.810	Kaempferol deoxyhexosyl-hexoside I	C27H30O15	593.1533	3.5	●		●
61	10.887	Isorhamnetin deoxyhexoside I	C21H20O11	447.0941	1.8	●		●
62	11.099	Isorhamnetin deoxyhexosyl-hexoside I	C28H32O16	623.1632	2.2	●		●
63	11.176	Kaempferol deoxyhexosyl-hexoside II	C27H30O15	593.1526	2.4	●		●
64	11.196	Isorhamnetin 3-O-hexoside I	C22H22O12	477.1046	1.6	●		●
65	11.293	Isorhamnetin deoxyhexoside II	C21H20O11	447.0935	0.5	●		●
66	11.293	Isorhamnetin hexuronide	C22H20O13	491.0841	2.0	●		●
67	11.510	Isorhamnetin deoxyhexosyl-hexoside II	C28H32O16	623.1633	2.3	●		●
68	11.570	Isorhamnetin 3-O-hexoside II	C22H22O12	477.1051	2.6	●		●
70	12.181	Kaempferol acetylhexoside I	C23H22O12	489.1058	4.0	●	●	●
71	12.402	Quercetin	C15H10O7	301.0354	−0.3	●	●	●
72	12.737	Luteolin	C15H10O6	285.0398	−2.3	●	●	●
73	12.819	Kaempferol acetylhexoside II	C23H22O12	489.1051	2.6	●		●
75	13.729	Quercetin p-coumaroyl-hexoside	C30H26O14	609.1258	1.3	●		●
76	13.749	Quercetin p-coumaroyl- deoxyhexosyl-hexoside I	C36H36O18	755.1854	3.3	●		●
77	13.769	Kaempferol p-coumaroyl-hexoside I	C30H26O13	593.1326	2.4	●	●	●
78	13.968	Quercetin hexuronide butyl-ester	C25H26O14	533.1316	2.9			●
79	13.968	Quercetin p-coumaroyl- deoxyhexosil-hexoside II	C36H36O18	755.1850	3.3	●		●
80	13.984	Kaempferol	C15H10O6	285.0403	−0.6	●	●	●
83	14.366	Kaempferol p-coumaroyl deoxyhexosyl hexoside I	C36H36O17	739.1894	1.9	●		●
85	14.561	Kaempferol p-coumaroyl-hexoside II	C30H26O13	593.1311	1.7	●	●	●
86	14.643	Kaempferol p-coumaroyl deoxyhexosyl hexoside II	C36H36O17	739.1899	2.9	●		●
88	15.563	Kaempferol acetyl p-coumaroyl-hexoside	C32H28O14	635.1432	4.0	●	●	●
89	15.799	Methylkaempferol	C16H12O6	299.0559	−0.7	●	●	●
91	17.088	Kaempferol di-p-coumaroyl hexoside I	C39H32O15	739.1695	3.6	●	●	●
92	17.284	Kaempferol di-p-coumaroyl hexoside II	C39H32O15	739.1694	3.3	●	●	●
93	17.313	Acacetin	C16H12O5	283.0611	−0.3	●	●
96	18.337	Kaempferol acetyl di-p-coumaroyl hexoside I	C41H34O16	781.1792	2.3	●	●	●
97	18.594	Kaempferol acetyl di-p-coumaroyl hexoside II	C41H34O16	781.1797	2.9	●	●	●
100	19.954	Kaempferol di-acetyl di-p-coumaroyl hexoside I	C43H36O17	823.1879	−0.1	●	●
102	20.144	Kaempferol di-acetyl di-p-coumaroyl hexoside II	C43H36O17	823.1885	0.6	●	●