Dextran is labeled with fluorescein (FITC) through conjugation reaction of dextran amine and isothiocyanate of FITC, Ex/Em wavelength 494/518 nm. Purity: >95% powder. Degree of substitution: 1 mol % substitution and at least one dye molecule per polymer.
Dextran, CAS# 9004-54-0
1) Improved fluorescent compounds for tracing cell lineage. Dev Biol. 1985 Jun; 109(2):509-14.