Date published: 2026-1-9

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4,4′-Azopyridine (CAS 2632-99-7)

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Alternate Names:
Azobis(4-pyridine)
Application:
4,4′-Azopyridine is a reactant for preparation of flexible polymers and metal-organic frameworks
CAS Number:
2632-99-7
Molecular Weight:
184.20
Molecular Formula:
C10H8N4
Supplemental Information:
This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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4,4′-Azopyridine is a reactant for preparation of flexible porous coordination polymers, metal-organic frameworks, heteroaromatic azo compounds, and low-dimensional and porous coordination compounds. It has been used in a variety of scientific research applications, including in the synthesis of organic dyes, as a catalyst for the synthesis of polymers, as a ligand for coordination chemistry, as an antioxidant, and as a fluorescent sensor for the detection of metal ions and organic molecules. 4,4′-Azopyridine has also been found to inhibit cytochrome P450 and the growth of cancer cells, as well as to reduce inflammation.


4,4′-Azopyridine (CAS 2632-99-7) References

  1. Crystal structure of 4,4'-(diazenediyl)dipyridinium nitrate perchlorate.  |  Qiu, QM., et al. 2022. Acta Crystallogr E Crystallogr Commun. 78: 897-899. PMID: 36072523
  2. Electrochemical study of electrode activators: 4,4′-azopyridine and its electron transfer properties to cytochrome c  |  J Haladjian, R Pilard, P Bianco, L Asso, JP Galy. 1985. Electrochimica Acta. 30(5): 695-699.
  3. Control of intramolecular electron transfer by protonation: oligomers of ruthenium porphyrins bridged by 4,4'-azopyridine  |  Marvaud, V., & Launay, J. P. 1993. Inorganic Chemistry. 32(8): 1376–1382.
  4. Syntheses and Structures of Zn Coordination Polymers with 4,4′-Bipyridine and 4,4′-Azopyridine. Effect of Counter Anions on the Network System  |  Kondo Mitsuru, Shimamura Mariko, Noro Shin-ichiro, Yoshitomi Tomomichi, Minakoshi Seika, Kitagawa Susumu. 1999. Chemistry Letters. 28(4): 285-286.
  5. Generation of chirality in 4,4′-azopyridine by co-crystallization with optically active dicarboxylic acids  |  A Wasilewska, MJ Milewska, M Gdaniec. 2009. Tetrahedron: Asymmetry. 20(13): 1472-1475.
  6. The first Mitsunobu protocol for efficient synthesis of α-acyloxyphosphonates using 4, 4′-azopyridine  |  Iranpoor, N., Firouzabadi, H., & Khalili, D. 2011. Phosphorus, Sulfur, and Silicon and the Related Elements. 186(11): 2166-2171.
  7. Structural Variety of Cobalt(II), Nickel(II), Zinc(II), and Cadmium(II) Complexes with 4,4′-Azopyridine: Synthesis, Structure and Luminescence Properties  |   and Dr.-Eng. Agnieszka Pladzyk, Dr.-Eng. Łukasz Ponikiewski, Dr.-Eng. habil. Anna Dołęga, Klaudia Słowy, Agata Sokołowska, Katarzyna Dziubińska, Dr. habil. Zbigniew Hnatejko. 2015. Chemistry-An Asian Journal. 10(11): 2388-2396.
  8. 4,4′-Azopyridine as an easily prepared and recyclable oxidant for synthesis of symmetrical disulfides from thiols or alkyl halides(tosylates)/thiourea  |  D Khalili, N Iranpoor, H Firouzabadi. 2015. Journal of Sulfur Chemistry. 36(5): 544-555.
  9. Photoresponsive supramolecular hydrogel co-assembled from Fmoc-Phe-OH and 4, 4′-azopyridine for controllable dye release  |  Dou, X. Q., Zhao, C. L., Mehwish, N., Li, P., Feng, C. L., & Schönherr, H. 2019. Chinese Journal of Polymer Science. 37: 437-443.
  10. Induction of chirality in 4,4′-azopyridine by halogen-bonding interaction with optically active ditopic donors  |  J Alfuth, J Chojnacki, T Połoński. 2019. New Journal of Chemistry. 43: 5512-5517.
  11. Copper(II)-MOF Containing Glutarate and 4,4′-Azopyridine and Its Antifungal Activity  |  Yang, S., Veerana, M., Yu, N., Ketya, W., Park, G., Kim, S., & Kim, Y. 2021. Appl. Sci. 12(1): 260.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

4,4′-Azopyridine, 1 g

sc-233026
1 g
$85.00