chemical robustness is the use of tri-or tetravalent metal cations combined with strongly chelating hard ligands in the design of MOFs. Notably, a small number Zr(IV)-phenolate MOFs have been reported with very high chemical stability, in many cases with better stability compared to Zr-MOFs of similar pore size made from carboxylate linkers . This trend in higher stability might in part be attributed to the stronger electrostatic interactions between Zr(IV) and the polyanionic catecholate group as well as a larger bite angle when compared to monoanionic carboxylates. This has intrigued our interest in developing MOFs utilizing common polyphenolic natural products as organic linkers, especially those lacking carboxylate groups but having catecholate or pyrogallate groups that can strongly chelate metal cations to form robust MOFs. We have particularly focused on ellagic acid (EA). Ellagic acid is a centrosymmetric and planar molecule with two catechol functional groups on opposite ends. It is also rather inexpensive, making it an appealing MOF linker. Notably, this eco-and bio-compatible molecule is part of the natural human diet-found in fruits, nuts and berriesand is well known as an antioxidant. Ellagic acid is also the base unit of the class of naturally occurring polyphenols known as ellagitannins. While reagent-grade ellagic acid can be acquired from chemical suppliers, it is also sold as a dietary supplement. Independent of the supplier, it is typically sourced and extracted from plant-based materials, such as tree bark or fruit peels, which are waste materials from the food, pulp and paper industries.