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Fluorescein isothiocyanate–dextran

average mol wt 10,000

CAS Number:
MDL number:

biological source

sugar beets root

Quality Level


FITC conjugate



mol wt

average mol wt 10,000

extent of labeling

0.003-0.020 mol FITC per mol glucose

storage temp.


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Dextran labeled with fluorescein isothiocyanate for possible use in perfusion studies in animals.


100, 250 mg in poly bottle
1 g in poly bottle

Preparation Note

Sigma typically tests the solubility of FITC dextrans in water at concentrations at or above 25 mg/ml. Solutions should be protected from light. In vivo, FITC-dextran is stable for more than 24 hours.

Other Notes

Native dextran has been found to have a molecular weight (MW) in the range of 9 million to 500 million. Lower MW dextrans will exhibit slightly less branching and have a more narrow range of MW distribution. Dextrans with MW greater than 10,000 behave as if they are highly branched. As the MW increases, dextran molecules attain greater symmetry. Dextrans with MW of 2,000 to 10,000, exhibit the properties of an expandable coil. At MW below 2,000, dextran is more rod-like. The MW of dextran is measured by one or more of the following methods: low angle laser light scattering, size exclusion chromatography, copper-complexation and anthrone reagent colorometric reducing-end sugar determination and viscosity.


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Signal Word


Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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Product Information Sheet

Quotes and Ordering

Matthias Vonbrüll et al.
Molecular biotechnology, 60(5), 339-349 (2018-03-11)
There have been many attempts to unveil the therapeutic potential of antisense molecules during the last decade. Due to its specific role in canonical Wnt signalling, β-catenin is a potential target for an antisense-based antitumour therapy. In order to establish
Antonini, E. et al.
Biopolymers null
Clotilde Cadart et al.
Nature communications, 9(1), 3275-3275 (2018-08-18)
Despite decades of research, how mammalian cell size is controlled remains unclear because of the difficulty of directly measuring growth at the single-cell level. Here we report direct measurements of single-cell volumes over entire cell cycles on various mammalian cell
The structure of NRRL B-512F dextran, methylation studies.
Van Cleve JW, Schacfer WC and Rist CE
Journal of the American Chemical Society, 78(17), 4435-4438 (1956)
Verónica Viñuela-Berni et al.
Scientific reports, 10(1), 467-467 (2020-01-18)
The blood-brain barrier (BBB) plays a significant pathophysiological role in multiple sclerosis (MS). Vasopressin (AVP) is released after brain injury and contributes to the inflammatory response. We propose that AVP may be modulating BBB permeability and hence affecting EAE clinical

Related Content

Fluorescein Isothiocyanate-Dextran

Dextran is a polymer of anhydroglucose. It is composed of approximately 95% alpha-D-(166) linkages. The remaining (163) linkages account for the branching of dextran.

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