File:Turmeric and curcurmin.jpg

Summary
The molecular structure of curcumin isolated from the root of turmeric. Curcumin, a natural compound, is the most active agent of the polyphenolic curcuminoids derived from the root of turmeric (Curcuma longa). It is a tautomeric compound existing in organic solvents as its enolic form, and in water as a keto form. Turmeric, as a member of the ginger family, has been widely used as an herbal medicine, ingredient of cosmetics, and dietary supplement.

Source: Front. Pharmacol., 09 May 2018 doi.org/10.3389/fphar.2018.00472 Fig 1. Curcumin, A Polyphenolic Curcuminoid With Its Protective Effects and Molecular Mechanisms in Diabetes and Diabetic Cardiomyopathy https://www.frontiersin.org/articles/10.3389/fphar.2018.00472/full License: CC-BY-4.0