Used primarily in biological research, this chemical is a fluorescent dye that binds specifically to DNA, particularly AT-rich regions. It is widely employed in techniques such as fluorescence microscopy and flow cytometry to visualize and analyze DNA in cells. Its ability to penetrate live cells makes it useful for studying nuclear structures and dynamics. Additionally, it is applied in assays to detect DNA damage and apoptosis, providing insights into cellular health and responses to treatments. Its fluorescence properties also make it a valuable tool in chromosome staining and karyotyping studies.