Synthesis, Characterization, and Biological Evaluation of Gabapentinoid Hybrids with Isoindole-1,3(2H)-Dione Moiety as Potential Antioxidant, Antimicrobial, and Anticancer Agents

Table 4

Free radical scavenging activity of studied compounds and ascorbic acid.

Conc. μg/mL	Compound 1				Compound 2				Compound 3				Compound 4				Compound 5				Ascorbic acid
	Free radical scavenging activity %				Free radical scavenging activity %				Free radical scavenging activity %				Free radical scavenging activity %				Free radical scavenging activity %				Free radical scavenging activity %
	30 min	60 min	90 min	120 min	30 min	60 min	90 min	120 min	30 min	60 min	90 min	120 min	30 min	60 min	90 min	120 min	30 min	60 min	90 min	120 min	30 min	60 min	90 min	120 min
250	14.82	16.64	39.88	44.02	2.04	9.03	13.71	19.95	28.94	34.47	39.84	42.58	4.2	8.4	10.85	14.85	12.32	15.52	19.35	22.04	95.42	98.02	98.13	98.23
500	18.02	20.28	40.93	44.86	6.54	14.35	18.26	23.33	41.48	44.07	49.55	56.45	27.37	38.37	42.44	44.27	14.98	19.03	20.65	23.25	96.58	98.15	98.22	98.36
750	20.56	22.98	43.05	48.16	7.59	16.26	20.2	25.76	50.4	55.57	60.12	71.45	29.93	58.62	56.86	63.97	21.2	27.84	30.52	33.84	96.65	98.16	98.26	98.41
1000	21.06	26.25	44.26	48.88	8.38	17.29	21.48	26.87	55	58.39	65.34	77.74	32.2	61.3	58.6	67.95	25.6	28.96	32.2	40.16	96.66	98.18	98.3	98.47