IDT307 is widely used as a fluorescent probe in biological imaging and cellular analysis due to its strong photostability and bright emission in the far-red to near-infrared range. Its spectral properties make it ideal for multiplex labeling, allowing simultaneous detection of multiple targets in complex samples with minimal background interference. It is commonly conjugated to antibodies, peptides, or nucleic acids for use in flow cytometry, fluorescence microscopy, and immunoassays. The dye performs well in live-cell imaging applications because of its low cytotoxicity and good cell membrane permeability. Additionally, IDT307 is utilized in diagnostic assays and high-throughput screening platforms where consistent and reliable fluorescence signals are required over extended periods.