Table 1.

IC₅₀ values determined for test molecules FDI-6, 1, 6, and 16 using the human breast cancer cell line MDA-MB-231.

Compound	MDA-MB-231 IC50 (μM) a
FDI-6	11.67 ± 1.35
1	171.5 ± 1.49
6	8.75 ± 1.27
16	4.61 ± 1.34

^a These values were calculated after a 72 h incubation period with the drug molecules; all values represent the mean (n = 9) ± SEM.