Table 1.

DPPH scavenging activity of benzotriazoloquinazolines 1–16.

Samples (1 mg/ml)	DPPH %
1	50.88 ± 0.15
2	29.88 ± 0.18
3	22.53 ± 0.21
4	16.63 ± 0.20
5	10.69 ± 0.18
6	16.79 ± 0.17
7	19.55 ± 0.13
8	20.12 ± 0.21
9	24.98 ± 0.10
10	14.24 ± 0.23
11	17.47 ± 0.14
12	20.57 ± 0.27
13	18.93 ± 0.15
14	36.01 ± 0.13
15	16.50 ± 0.13
16	27.16 ± 0.17
BHT	93

Each value is expressed as mean ± SD (n = 3).