 Möbius ladders play an important role in the theory of graph minors.The earliest result of this type is a theorem of that graphs with no "K"5 minor can be formed by using clique-sum operations to combine planar graphs and the Möbius ladder "M"8; for this reason "M"8 is called the Wagner graph.first synthesized molecular structures in the form of a Möbius ladder, and since then this structure has been of interest in chemistry and chemical stereography, especially in view of the ladder-like form of DNA molecules.