Nycodenz® - Iohexol

Cat. No. 18003 (previous 1002424)

Available, delivery time 1-7 days

€469.00*

Key Features
  • Effective for purification of viruses and virus particles
  • Suitable for the isolation of different cell types and organelles
  • Convenient for the separation of viable from non-viable cells
  • Non-ionic, non-toxic and highly soluble in water
Product description
Quantity 1x500 g
Intended use Research use only
Product description Nycodenz is a non-ionic tri-iodinated derivative of benzoic acid with three aliphatic hydrophilic side chains. The systematic name of Nycodenz is 5- (N-2, 3-dihydroxypropylacetamido)-2, 4, 6-tri-iodo-N, N'-bis (2, 3 dihydroxypropyl) isophthalamide. Nycodenz has a molecular weight of 821 and a density of 2.1 g/ml. Nycodenz is non-ionic, non-toxic and is very water soluble. Stock solutions of over 80% (w/v) can be prepared. Nycodenz is also soluble in formamide and dimethyl formamide, thus it is possible to prepare non-aqueous denaturing gradients of Nycodenz. Aqueous solutions of Nycodenz have a very high water activity. Most particles will therefore be fully hydrated in solutions of Nycodenz and will band at a low density. Solutions of Nycodenz are stable to heat and may be autoclaved, stability to autoclaving is enhanced by the addition of small amounts of Tris and EDTA. Solutions of Nycodenz are very resistant to bacterial degradation and Nycodenz is not metabolized by mammalian cells.
Stability & storage Nycodenz in solid form is stable for a period of 5 years when stored at roomtemperature and protected from light. Nycodenz in solution is stable for 5 years provided that it is kept sterile and protected from light. Prolonged exposure to direct sunlight leads to release of iodine from the molecule. This effect is negligible when working with these solutions on a day to day basis.
Background

Gradients of Nycodenz can be generated by:

  • Centrifugation in situ (self-forming gradients).
  • Diffusion. Using Nycodenz, linear gradients can be simply prepared within 45 minutes.
  • Freezing and thawing.
  • Tilted tube rotation (Gradient MasterTM).

The density of Nycodenz in solution can be determined by measuring the refractive index. The density can also be determined spectrophotometrically.

Nycodenz is a non-particulate medium therefore the distribution of cells in gradients can be determined using a haemocytometer, electronic particle counter or by light scattering measurements using a spectrophotometer.

Nycodenz does not interfere with the orcinol and diphenylamine reactions for the estimation of nucleic acids nor with the very sensitive dye binding assays for protein and DNA.

Polysaccharides and sugars can be determined in the presence of Nycodenz using the phenol/H2SO4 assay. Fluorimetric assays of nucleic acids and proteins can also be carried out in the presence of Nycodenz. Nycodenz does not interfere with most assays for the marker enzymes of subcellular components, also commercial scintillants are compatible with Nycodenz.

Nycodenz can be removed from samples by dialysis, ultrafiltration or gel filtration. Cells, subcellular organelles and other particulate matter can be isolated from Nycodenz by centrifugation without the risk of contaminating the pellet with Nycodenz.

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