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. 2021 Mar 12;15:1167–1180. doi: 10.2147/DDDT.S296502

Table 3.

1H-NMR Data of LFB and LFB-DDQ CT Complex (in DMSO-D6)

Signal Chemical Shift, ppm Splitting, Integration Assignment Location, Atom Number
LFB LFB-DDQ
1 2.29 2.28 s, 3H CH3 C26
2 2.51 2.51 s, 6H MDSO
3 4.12–4.35 3.85–3.90 s, 2H NH2 N28
4 6.79–6.82 6.81 m, 3H Ph-H C3, C4, C6
5 7.10–7.61 7.09–7.61 m, 4H Ph-H C12, C13, C15, C16
6 8.03–8.03 8.00–8.01 m, 3H Ph-H C20, C21, C22
7 8.55 8.53 s, 1H Urea-NH N10
8 9.22 9.18 s, 1H Urea-NH N7
9 11.73 s, 1H Indazole-NH N26

Abbreviations: s, singlet; m, multiplet.