Etamivan (INN) or ethamivan (USAN), trade name Analepticon, is a respiratory stimulant drug related to nikethamide.

5-CFDA(5-Carboxyfluorescein diacetate) is membrane-permeant. It can be loaded into cells via incubation and hydrolyzed by intracellular esterases to 5-carboxyfluorescein that is used for labeling human intervertebral disk cells in vitro for fluorescence microscopy.

Glycerylphosphorylcholine is a natural choline compound found in the brain and in milk. It is also a parasympathomimetic acetylcholine precursor which may have a potential for the treatment of Alzheimer's disease and dementia.