2,5-dimethoxycyclohexa-2,5-diene-1,4-dio is a natural product. The redox cycle of 2,5-dimethoxybenzoquinone is a source of reducing equivalent for the regeneration of Fe2+ and H2O2 in brown rot fungal decay of wood.

Chromium picolinate causes DNA damage and mutation. It is an activator of p38.

Theaflavine-3, 3'-digallate and lactic acid together could reduce herpes simplex virus transmission.