Table 6.

Observed versus predicted cytotoxic activities of model 6

Compound	Log 1/IC50 (µg/mL)		Log 1/IC50 (µM)
	Observed	Predicted	Observed	Predicted
1	0.719	0.676	3.151	2.962
2	0.543	0.451	2.379	1.972
3	0.746	0.940	3.269	4.119
4	1.028	1.159	4.210	4.722
5	2.035	1.983	8.333	8.120
6	0.783	0.772	2.501	2.477
7	1.347	1.373	4.534	4.621
8	1.311	1.223	3.261	3.042
9	0.825	0.837	2.635	2.673
10	1.244	1.159	4.736	4.390

Abbreviation: IC₅₀, inhibitory concentration 50%.