Used as a key intermediate in the synthesis of macrocyclic compounds, particularly in the development of crown ether derivatives for ion-selective sensors and extraction agents. Its structure enables strong coordination with metal cations, making it valuable in analytical chemistry for separating alkali and alkaline earth metals. Also applied in pharmaceutical research for designing drug delivery systems due to its ability to form stable host-guest complexes. Additionally, it serves in catalysis and supramolecular chemistry for constructing molecular machines and smart materials.