Biotin-Dextran-Fluorescein is a dually labeled dextran polymer. Dextran is labeled with both biotin and fluorescein (FITC), Ex/Em wavelength 494/518 nm. Purity: >95% lyophilized powder. Standard degree of substitution: 1 mol % substitution for each dye. There is at least one biotin and one fluorescein molecule per polymer.
Dextran, CAS# 9004-54-0
1) Improved fluorescent compounds for tracing cell lineage. Dev Biol. 1985 Jun; 109(2):509-14.