Date published: 2025-10-18

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Bismarck Brown R (CAS 5421-66-9)

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Alternate Names:
5,5′-[(4-Methyl-m-phenylene)bis(azo)]bis[toluene-2,4-diamine] dihydrochloride
Application:
Bismarck Brown R is a small molecule azo dye
CAS Number:
5421-66-9
Molecular Weight:
461.39
Molecular Formula:
C21H24N82HCl
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Bismarck Brown R is a dye that is not has not been as incorporated as a biological stain as Bismarck Brown Y (sc-214611). The compound has been used in a modified Coomasie blue staining procedure with the effect of Bismarck Brown R reducing the staining and destaining times yet increasing the sensitivity of detection (from 100 ng of BSA to 25 ng).


Bismarck Brown R (CAS 5421-66-9) References

  1. Organic dye molecules as reducing agent for the synthesis of electroactive gold nanoplates.  |  Sharma, J. and Vijayamohanan, KP. 2006. J Colloid Interface Sci. 298: 679-84. PMID: 16455100
  2. Role of polyfunctional organic molecules in the synthesis and assembly of metal nanoparticles.  |  Sharma, J., et al. 2007. J Nanosci Nanotechnol. 7: 2139-50. PMID: 17655007
  3. Using protein nanofibrils to remove azo dyes from aqueous solution by the coagulation process.  |  Morshedi, D., et al. 2013. Colloids Surf B Biointerfaces. 112: 245-54. PMID: 23999142
  4. Synthesis and characterization of citric acid-modified chitosan Schiff base with enhanced antibacterial properties for the elimination of Bismarck Brown R and Rhodamine B dyes from wastewater.  |  Pawariya, V., et al. 2024. Int J Biol Macromol. 264: 130664. PMID: 38453113
  5. A modified Coomassie blue staining of proteins in polyacrylamide gels with Bismark brown R.  |  Choi, JK., et al. 1996. Anal Biochem. 236: 82-4. PMID: 8619499
  6. Oil blue N or NA as a fat stain for animal histology.  |  Lillie, R. D. 1945. Stain Technology. 20.1: 7-9.
  7. Rectal glands in woodlice.  |  Gupta, Minati. 1961. Nature. 191.4786: 406-407.
  8. Some structural features of vital dyes.  |  Iogannsen, M. G. 1997. Bulletin of Experimental Biology and Medicine. 83: 591-595.
  9. Interaction between nucleic acid and Bismarck Brown R by spectrophotometry.  |  Wei, Q., et al. 2005. Chinese Journal of Analytical Chemistry. 33.9: 1279-1282.
  10. Synthesis, characterization and photocatalytic activity of carbon nanotube/titanium dioxide nanocomposites.  |  Kamil, Ahmed M., et al. 2018. Arabian Journal for Science and Engineering. 43: 199-210.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Bismarck Brown R, 25 g

sc-214610
25 g
$34.00

Bismarck Brown R, 100 g

sc-214610A
100 g
$108.00