👉 Xanthins are a class of secondary metabolites that occur in plants, fungi and some bacteria. They play a role in plant defense against pathogens and insects, as well as in other biological processes such as photosynthesis. Xanthin is an organic compound with the formula C24H30O5N, which can be found in various species of plants. Xanthins are known for their ability to bind to and inhibit the action of certain types of antibiotics (e.g., pen