C.I. Food Yellow 10, also known as Fast Yellow AB or Acid Yellow, is an azo dye used primarily as a food dye that is now delisted in both Europe and USA and is forbidden if used in foods and drinks. Ungraded products supplied by Spectrum are indicative of
DBCO-Cy3 (DBCO-Sulfo-Cy3) is a derivative of the Cyanine3 fluorophore, an orange fluorescent dye that is pH insensitive from pH 4-10, with an excitation maximum of 555 nm and an emission maximum of 580 nm.