Comp. No.

IC₅₀ (µg/ml)

2

6.6

3

4.2

4

5.4

5

5.2

6

5.5

7

5.1

8

5.0

9

3.6

10

4.5

11

3.4

12

3.2

13

4.6

14

4.2

15

4.1

16

3.3

Ascorbic acid

3.2