Cyanine7.5 is a fluorescent dye used in the labeling of proteins and nucleic acids in biochemistry and molecular biology. It is often used in conjunction with other fluorescent dyes such as Cy3 and Cy5, allowing for the simultaneous detection of multiple targets in a single experiment. Cyanine7.5 is also used in imaging applications such as flow cytometry, fluorescence microscopy, and bioanalytical assays.