👉 A porphyrin is a type of organic compound that contains the nitrogen atom of a hydrogen atom in its central carbon, and it has been shown to have a unique chemical structure. Porphyrins are often used as catalysts in biological processes such as photosynthesis, where they can react with other molecules to form water (H2O), which is necessary for the process to occur. They are also found in many natural sources, including seaweed and plants.