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.