Cyclen is a macrocycle capable of selectively binding cations that used as a ligand in chemistry for instance with chemicals used in MRI contrast agents.

Visnagin has acute hypotensive anti-inflammatory and neuroprotective effects it protects against doxorubicin-induced cardiomyopathy through modulation of mitochondrial malate dehydrogenase.

Vanillin is mainly used as a flavouring agent, primarily in foods and beverages such as chocolate and dairy products, but also to mask unpleasant tastes in medicines or livestock fodder.