Table 4.

Protein tyrosine phosphatase 1B inhibitory results of S,S,R-5.

Samples	Mol wt.	Conc (μM/mL)	Percent Inhibition	IC50 (μM)
S,S,R-5	384	500 250 125 62.5 31.25	88.35 ± 0.89 ns 84.36 ± 1.15 ns 79.62 ± 0.03 ns 76.16 ± 0.12 ns 73.67 ± 0.35 ns	0.91 ± 0.10
Ursolic acid	457	500 250 125 62.5 31.25	90.83 ± 0.47 87.23 ± 0.96 82.29 ± 0.57 78.33 ± 0.55 76.03 ± 0.77	1.35 ± 0.13

Data was expressed as mean percent inhibition ± SEM. Two-way ANOVA followed by Bonferroni’s posttest was used for statistical analysis. ^ns; not significant compared to that of the standard drugs.