XFD488 acid *Same Structure to Alexa Fluor(TM) 488 acid*

Molecular weight: 648.49. Excitation (nm): 499. Emission (nm): 520. Extinction coefficient (cm-1 M-1): 73000. Quantum yield: 0.92. Correction factor (280 nm): 0.11. XFD488 is manufactured by AAT Bioquest, and it has the same chemical structure of Alexa Fluor(R) 488 (Alexa Fluor(R) is the trademark of ThermoFisher). XFD488 acid has the same molecule as Alexa Fluor(R) 4882 acid. It is a bright yellow-fluorescent dye optimal for use with the 488 nm Argon laser line. XFD488 dye is water soluble and pH-insensitive from pH 4 to pH 10. XFD488 acid is the most economic amine-reactive form for conjugating this dye to a peptide.