Dextran is a polysaccharide with excellent water solubility and good biocompatibility. Functionalized dextrans have been used in numerous biomedical areas, including drug formulation, bioassay development, in-vitro and in-vivo imaging. Nanocs is a leading supplier for various dextran conjugates. We have offered hundreds various fluorescently labeled dextrans with fluorophores from UV region to near IR, these conjuates including coumarin dextrans, fluorescein dextrans, Rhodamine dextrans, including rhodamine B, Rhodamine 101, Rhodamine 6G, Texas red, TMR and many cyanine dye labeled dextrans, such as Cy3 dextrans, Cy3.5, Cy5, Cy5.5, Cy7, Cy7.5 Dextran  conjugates. Molecular weight of our dextran products ranges from 3000 Da to 2000 kDa. Customer conjugation available upon request.