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The IC50 values of representative compounds screened from P. sinense against COX-2 in vitro.
| No. | Compounds | IC50 (μM) a |
|---|---|---|
| 1 | Diphyllin | 1.29 ± 0.14 |
| 2 | Podophyllotoxin | 10.49 ± 0.61 |
| 3 | Diphyllin O-glucoside | >20 |
| 4 | Indomethacin b | 1.22 ± 0.08 |
IC50, half-maximal inhibitory concentrations.
Positive control.
