Used as a key intermediate in the synthesis of macrocyclic compounds for advanced materials and supramolecular chemistry. Its rigid ethynyl-functionalized crown ether-like structure enables selective binding of metal ions, making it valuable in sensor design and catalysis. The alkyne groups allow further functionalization via click chemistry, useful in constructing molecular frameworks for organic electronics and coordination networks. Also explored in pharmaceutical research for targeted drug delivery systems due to its ability to form host-guest complexes.