Zinquin is primarily used in biological and biochemical research to detect and quantify zinc ions in various samples. It is particularly valuable in studying zinc homeostasis and its role in cellular processes. Researchers utilize Zinquin to visualize zinc distribution in cells and tissues, as it forms fluorescent complexes with zinc, making it easier to observe under a microscope. This application is crucial in understanding zinc's involvement in neurotransmission, immune function, and enzyme regulation. Additionally, Zinquin is employed in medical research to investigate zinc-related disorders, such as zinc deficiency or toxicity, and its potential impact on diseases like Alzheimer's and diabetes. Its sensitivity and specificity make it a vital tool in advancing knowledge of zinc biology.