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.

COH34 analog 1 is a COH34 oxidation analogue that can be used to synthesize active compounds.

Dynorphin B (1-9) is a neuropeptide and N-terminal cleavage product of dynorphin B. The formation of dynorphin B (1-9) is blocked by N-ethylmaleimide (NEM), a non-selective inhibitor of cysteine peptidases.