Steppogenin exhibits significant tyrosinase inhibition activity, ;it also shows strong mushroom tyrosinase inhibitory activity with IC(50) values lower than 50 microM, more potent than kojic acid (IC(50) = 71.6 microM), a well-known tyrosinase inhibitor.

Succinic anhydride is a cyclic anhydride and a nonclaevable ADC linker extracted from patent WO2009064913A1.

8-Prenylkaempferol is an effective agent for attenuating pro-inflammatory NO induction, it may be an anti-inflammatory agent for suppressing influenza A virus-induced RANTES production acts by blocking PI3K-mediated transcriptional activation of NF-κB and IRF-3 and in part by interfering with IκB degradation which subsequently decreases NF-κB translocation.