👉 Picrorhizin is a type of antibiotic that belongs to the class of macrolides. It was first isolated from the bark of the tree Picrorhiza esculentaria in 1896 by Sir William Scott. The chemical structure of picrorhizin is a three-dimensional molecule with a ring-like structure, consisting of two rings and one oxygen atom. Picrorhizin is used to treat bacterial infections such as pneumonia, tuberculosis, and other respiratory tract infections.