Table 1.

Radical scavenging activities and redox potentials (E_p) of thiophenols 2–6 and phenols 1, 7–10. The results obtained in DPPH^•, ABTS^•+, GO^• assays are expressed as mean IC₅₀ standard deviation (n = 3).

Compound				IC50 (µM)			ORAC-FL Index	Ep (mV)
	R1	R2	R3	DPPH•	ABTS•+	GO•
2 (TFA)				47.8 ± 0.9a	19.9 ± 1.0a	4.25 ± 0.10a	0.34 ± 0.04a	271
3				49.8 ± 0.7	20.6 ± 0.7	4.50 ± 0.08	0.12 ± 0.02	198
4				47.3 ± 0.7	19.9 ± 0.3	4.41 ± 0.15	0.15 ± 0.01	186
5				42.7 ± 2.1	22.9 ± 0.6	6.70 ± 0.07	0.30 ± 0.03	218
6				50.7 ± 1.6	27.0 ± 1.8	6.66 ± 0.13	0.34 ± 0.01	245
1(FA)				64.6 ± 1.9a	16.8 ± 0.4a	37.5 ± 2.5a	3.2 ± 0.1a	344 b
7				61.7 ± 0.8	25.6 ± 1.8	76.4 ± 3.6	4.0 ± 0.4	327
8				61.2 ± 0.7	26.0 ± 1.7	70.7 ± 2.5	3.7 ± 0.3	338
9				43.9 ± 1.6	16.6 ± 0.3	3.90 ± 0.1	3.2 ± 0.3	291
10				69.7 ± 3.8	19.8 ± 0.8	31.2 ± 3.9	2.7 ± 0.1	351
Trolox	----	----	----	24.6 ± 0.9	18.2 ± 0.5	2.98 ± 0.15	1.00 ± 0.02	110

^a Data from Chavarria et al. [24]. ^b Data from Garrido et al. [23].