Table 1.

Cytotoxicity of tested compounds on Vero cells. Safe concentration + 1, +2, + 3, +4: about 25, 50, 75, 100% of cell sheet was affected respectively, M: masked (color of compounds made cells unseen).

Code	Concentration (µg/100µl)
	10	20	30	40	50	60	70	80	90	100
1	-	-	-	-	-	-	-	-	-	-
3	-	-	-	-	-	-	-	-	-	-
7a	-	-	-	-	-	+ 1	M	M	M	M
7b	-	-	-	-	-	M	M	M	M	M
7c	-	-	-	-	-	-	-	-	M	M
7d	-	-	-	-	-	-	-	-	-	-
9a	-	-	-	-	-	-	+ 1	+ 2	+ 3	+ 4
9b	-	-	-	-	-	-	+ 1	+ 1	+ 2	+ 3
11a	-	-	+ 1	M	M	M	M	M	M	M
11b	-	-	-	-	-	M	M	M	M	M
11c	-	-	-	-	-	-	-	-	M	M
13	-	-	-	-	-	-	-	-	-	-