Benproperine phosphate is a cough suppressant.

Lucidin ω-ethyl ether (compound 17) is an anthraquinone metabolite isolated from the root part of Prismatomeris filamentosa with some antibacterial activity against Gram-positive and Gram-negative bacteria.

Competitive inhibitor of cGMP-dependent protein kinase (PKG); analog of a substrate peptide corresponding to a phosphorylation site of histone H2B. Competes with synthetic substrates (Ki = 86 mM) but does not inhibit phosphorylation of intact histones by PKG. Inhibits phosphorylation of intact histones by PKA.