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Nuclear Yellow
Hoechst S769121; CAS 74681-68-8
The long-wavelength tracer nuclear yellow is often combined with the popular retrograde tracer true blue for two-color neuronal mapping. In neuronal cells, nuclear yellow primarily stains the nucleus with yellow fluorescence, whereas true blue is a UV light-excitable, divalent cationic dye that stains the cytoplasm with blue fluorescence. Both nuclear yellow and true blue are stable when subjected to immunohistochemical processing and can be used to photoconvert DAB into an insoluble, electron-dense reaction product. Bisbenzimide and Nuclear Yellow, when transported retrogradely through axons to their parent cell bodies, may migrate out of the axons and the cell bodies, as indicated by fluorescence of adjoining glial nuclei. This migration was found to take place both in vivo and in vitro during storage of the sections in water. When using the tracers in 1% concentrations the in vivo migration may be controlled by restricting the survival time. The in vitro migration may be prevented by rapid histological processing of the material.
Chemical structure for Nuclear Yellow [Hoechst S769121] *CAS 74681-68-8*
Chemical structure for Nuclear Yellow [Hoechst S769121] *CAS 74681-68-8*
CatalogSize
Price
Quantity
1753925 mg
Price
 
Physical properties

Molecular weight596.96
SolventDMSO
Spectral properties

Excitation (nm)372
Emission (nm)504
Storage, safety and handling

H-phraseH303, H313, H340
Hazard symbolT
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R68
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC41116134
CAS74681-68-8
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Page updated on October 8, 2025