4-Hydroxybenzoic acid is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid. It is a white crystalline solid that is slightly soluble in water and chloroform but more soluble in polar organic solvents such as alcohols and acetone.

Catechin 7-O-beta-D-glucopyranoside has intestinal anti-inflammatory activity.

Physalin A exerts anti-tumor activity in non-small cell lung cancer cell lines by suppressing JAK/STAT3 signaling, it inhibits androgen-independent prostate cancer cell growth through activation of cell apoptosis and downregulation of androgen receptor expression.