XFD546 acid *Same Structure to Alexa Fluor(TM) 546 acid*

Molecular weight: 1264.91. Excitation (nm): 561. Emission (nm): 572. Extinction coefficient (cm-1 M-1): 112000. Quantum yield: 0.79. Correction factor (280 nm): 0.12. XFD546 is manufactured by AAT Bioquest, and it has the same chemical structure of Alexa Fluor(R) 546 (Alexa Fluor(R) is the trademark of ThermoFisher). It is a bright red-fluorescent dye optimal for use with the yellow laser line at 546 nm. XFD546 dye is water soluble and pH-insensitive from pH 4 to pH 10. XFD546 acid is the most economic amine-reactive form for conjugating XFD546 fluorophore to a peptide.