Vari Fluor 555 Carboxylic acid (free acid)（Cat No.:I041343）is a fluorescent dye that emits light at 555 nm, typically in the orange-red spectrum. The compound contains a carboxylic acid group, which makes it suitable for conjugation to biomolecules such as proteins, peptides, or antibodies in research and diagnostic applications. This dye is widely used in fluorescence microscopy, flow cytometry, and cell-based assays for visualizing and tracking cellular processes. Its bright fluorescence and stable performance enable researchers to study cellular dynamics, protein interactions, and molecular pathways with high sensitivity and resolution.
