Table 1.

Cytotoxicity assessment of compounds isolated from C. tincturia.

	Cpd	Percent viability
		0.01 μM	0.1 μM	1 μM	10 μM	100 μM
MCF-7	1	95.8 ± 1.6	91.5 ± 3.4	88.6 ± 3.3	84.8∗ ± 1.6	78.8∗ ± 0.3
	2	99.4 ± 1.2	94.8 ± 3.3	91.1 ± 3.2	90.3 ± 2.4	85.9∗ ± 1.6
	3	99.1 ± 0.3	95.1 ± 3.4	94.0 ± 2.5	92.8 ± 1.7	90.5∗ ± 0.3
	4	99.8 ± 0.5	96.0 ± 0.5	94.5 ± 3.1	91.1 ± 2.4	87.9∗ ± 0.6
	5	98.3 ± 1.2	91.8 ± 2.7	88.9 ± 2.8	86.9∗ ± 1.7	80.2∗ ± 1.2
	6	97.5 ± 1.5	93.2 ± 3.8	90.4 ± 3.4	88.2∗ ± 2.1	80.3∗ ± 1.7
SAOS-2	1	98.9 ± 0.8	95.1 ± 0.9	92.1 ± 0.9	80.4∗ ± 0.9	70.1∗ ± 0.2
	2	99.2 ± 0.6	97.4 ± 2.0	94.5 ± 1.3	92.8 ± 1.6	89.3∗ ± 1.5
	3	97.4 ± 1.0	96.8 ± 0.9	91.9 ± 1.7	84.7 ± 3.4	66.2∗ ± 1.2
	4	98.4 ± 0.7	95.8 ± 0.8	92.7 ± 0.4	90.1 ± 0.9	84.7∗ ± 1.0
	5	97.0 ± 1.5	92.9 ± 0.8	90.9 ± 0.5	85.4∗ ± 0.5	77.1∗ ± 0.5
	6	96.6 ± 0.8	93.6 ± 0.7	92.6 ± 1.9	88.5∗ ± 1.2	76.2∗ ± 0.9
MG-63	1	88.2 ± 0.1	82.3 ± 1.2	74.9∗ ± 2.0	61.3∗ ± 0.4	40.4∗ ± 0.5
	2	95.9 ± 2.7	88.8 ± 2.0	81.1∗ ± 0.3	74.9∗ ± 1.4	70.9∗ ± 0.6
	3	96.7 ± 2.0	92.2 ± 1.6	87.4 ± 1.2	80.8∗ ± 0.2	64.3∗ ± 1.1
	4	98.1 ± 0.4	93.2 ± 1.3	87.2∗ ± 0.8	79.8∗ ± 2.0	60.2∗ ± 1.7
	5	93.1 ± 0.9	83.4 ± 1.2	78.1∗ ± 0.8	67.7∗ ± 1.1	54.7∗ ± 2.1
	6	91.1 ± 0.7	86.2 ± 0.8	82.2 ± 1.2	73.0∗ ± 1.2	63.4∗ ± 0.4

Cells were treated with test compounds for 72 h and viability was determined using SRB assay. Data are expressed as mean ± SD; n = 6. ^∗Significantly different from control untreated cells (p < 0.05).