Table 2. ¹³C NMR (400.13 MHz for ¹H, 100.61 MHz for ¹³C, DMSO-d₆, 30°C).

Atom #	Silybin A-7,23-diyl bis(hydrogen sulphate)	Silybin B-7,23-diyl bis(hydrogen sulphate)
2	82.61	82.57
3	71.45	71.50
4	197.70	197.71
4a	100.46	100.48
5	163.35	163.34
6	96.18	96.15
7	167.08	166.99
8	95.16	95.13
8a	162.52	162.51
10	76.06	76.06
11	75.72	75.71
12a	143.18	143.14
13	116.59	116.70
14	130.27	130.28
15	121.51	121.31
16	116.36	116.40
16a	143.27	143.23
17	127.10	127.11
18	111.83	111.77
19	147.64	147.64
20	147.10	147.07
21	115.40	115.37
22	120.29	120.27
23	64.72	64.70
19-OMe	55.65	55.64