Table 6.

Inhibitory concentration (IC₅₀, µM) of compounds 1–4 against various tumor cell lines (cis-platinum as positive control).

Compound	IC50 (µM)
	A375		H1299		HepG2		HT29		HCC1937
	24 h	72 h	24 h	72 h	24 h	72 h	24 h	72 h	24 h	72 h
1	5.22	0.69	8.63	1.32	4.22	0.89	4.69	0.85	9.68	2.62
2	7.18	0.95	10.3	2.62	5.67	1.35	6.12	1.12	11.6	3.11
3	40.3	11.3	>50	26.3	11.3	5.03	13.0	4.33	>50	12.6
4	6.04	0.78	10.1	2.15	5.16	1.11	5.37	1.02	10.3	2.89
cis-platinum	23.1	9.32	21.2	7.3	>50	18.9	>50	>50	>50	>50