Tsugafolin has weak anti-HIV activity.

N-Acetyl lysyltyrosylcysteine amide is a non-toxic, potent, reversible, and specific myeloperoxidase (MPO) tripeptide inhibitor that effectively inhibits MPO production in vivo, attenuates neuronal damage, preserves brain tissue and neurological function post-stroke, and inhibits MPO-dependent hypochlorite (HOCl) production, protein nitration, and LDL oxidation.

O-Desmethyl Quinidine is a novel quinidine analog with significant antiarrhythmic activity and low acute toxicity that may be useful in the treatment of cardiac arrhythmias.