Table 2. Preferential Cytotoxicity Activity of Isolated Compounds from F. hezarlalehzarica Roots on Human PANC-1 Pancreatic Cancer Cells.

compound	PC50a (μM)	compound	PC50a (μM)
1	90.5	11	3.0
2	0.7	12	57.4
3	1.2	13	35.9
4	3.8	14	1.5
5	3.5	15	3.8
6	1.5	16	5.9
7	15.3	17	3.2
8	73.1	18	16.4
9	8.9	PHBAb	>100
10	1.3	BAMEc	>100
arctigenin	0.9	CH2Cl2 extract	1.1 (μg/mL)

^aConcentration at which 50% of the cells were killed preferentially in nutrient-deprived medium (NDM).

^bp-Hydroxybenzoic acid.

^cBenzoic acid methyl ester.