Evaluation of antioxidant properties of synthesized compounds using DPPH, ABTS and FRAP assays.

Entry	IC50 (μM) ± SEMa		FRAP value (μM)
	DPPH	ABTS
18	58.34 ± 1.21	45.11 ± 1.77	29.84
19	81.34 ± 1.36	63.44 ± 1.14	40.61
20	<100	77.08 ± 1.37	44.81
21	14.44 ± 0.13	6.29 ± 0.09	36.01
22	16.33 ± 0.10	43.25 ± 1.34	ND
23	18.19 ± 0.11	12.11 ± 0.14	53.57
24	21.21 ± 0.15	48.80 ± 1.20	14.75
25	25.04 ± 1.16	20.73 ± 1.11	20.07
26	29.20 ± 1,15	40.59 ± 1.11	24.7
27	14.55 ± 0.52	20.37 ± 0.30	ND
28	1.77 ± 0.04	2.06 ± 0.11	45.24
29	10.84 ± 0.63	23.49 ± 1.04	ND
Ascorbic acid	4.89 ± 0.09	6.08 ± 0.21	90.89
Gallic acid	35.25 ± 1.04	35.25 ± 1.19	—
Ferulic acid	69.75 ± 1.48	35.25 ± 1.26	—

^aND = not determined.