BP Fluor 488 cadaverine is a carboxyl/carbonyl-reactive building block, frequently utilized for modifying carboxyl groups via stable amide bonds in the presence of activating agents (such as EDC or DCC) or activated esters (like NHS esters). BP Fluor 488 dye has an excitation peak at 499 nm and an emission peak at 520 nm. This conjugate is widely employed in microscopy, flow cytometry, and various other applications. BP Fluor 488 is a pure 5-sulfonated rhodamine molecule, eliminating batch-to-batch variability caused by differences in isomer ratios.