BP Fluor 488 Alkyne is a common labeling dye utilized in click chemistry reactions. It reacts with azide groups found in antibodies, proteins, peptides, amino-modified oligonucleotides, and other target molecules. The dye has an excitation peak at 499 nm and an emission peak at 520 nm. This conjugate is extensively employed in microscopy, flow cytometry, and other applications. BP Fluor 488 is a pure 5-sulfonated rhodamine molecule, which eliminates batch-to-batch variations caused by differing isomer ratios.