1-Aza-15-crown 5-Ether is widely used in coordination chemistry due to its ability to selectively bind with metal ions, particularly alkali and alkaline earth metals. Its crown ether structure allows it to form stable complexes with cations, making it valuable in ion transport studies and as a phase-transfer catalyst in organic synthesis. It is also employed in the development of ion-selective electrodes and sensors, where its selective binding properties enhance the detection of specific ions in analytical chemistry. Additionally, it finds applications in supramolecular chemistry for constructing molecular machines and host-guest systems, leveraging its ability to encapsulate and stabilize ions within its cavity.