Kansuinine E, a jatrophane-type diterpenoid, is a plant-derived compound isolated from the roots of E. kansui. It functions as a nitric oxide inhibitor, with an inhibitory concentration of 6.3 μM (IC50).

Diethyl succinate is the diethyl ester of succinate and acts as an irritant.

2-(4-Hydroxyphenylazo)benzoicacid is a spectrophotometric probe that shows changes in absorption spectra upon binding to proteins and binds to bovine serum proteins.