Date published: 2026-5-19

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4-(4-Butylphenylazo)phenol (CAS 2496-21-1)

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Alternate Names:
4-Butyl-4′-hydroxyazobenzene
CAS Number:
2496-21-1
Molecular Weight:
254.33
Molecular Formula:
C16H18N2O
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-Butylphenylazo)phenol is a biochemistry compound. 4-(4-Butylphenylazo)phenol acts as a pH indicator, changing color in response to changes in the acidity or alkalinity of a solution. 4-(4-Butylphenylazo)phenol interacts with certain biomolecules, allowing to study the binding and transport of these molecules in biological systems. Its unique chemical structure makes it a useful probe for studying the structure and function of biological macromolecules.


4-(4-Butylphenylazo)phenol (CAS 2496-21-1) References

  1. Synthesis, fluorescence and photoisomerization studies of azobenzene-functionalized poly(alkyl aryl ether) dendrimers.  |  Nithyanandhan, J., et al. 2004. Chemistry. 10: 689-98. PMID: 14767933
  2. Hierarchical self-assembly of two-length-scale multiblock copolymers.  |  ten Brinke, G., et al. 2011. J Phys Condens Matter. 23: 284110. PMID: 21709325
  3. Unusual viscoelasticity behaviour in aqueous solutions containing a photoresponsive amphiphile.  |  Takahashi, Y., et al. 2013. J Colloid Interface Sci. 407: 370-4. PMID: 23838330
  4. Micellar catalysis using a photochromic surfactant: application to the Pd-catalyzed Tsuji-Trost reaction in water.  |  Billamboz, M., et al. 2014. J Org Chem. 79: 493-500. PMID: 24295431
  5. Phase behavior and dynamics of a cholesteric liquid crystal.  |  Roy, D., et al. 2014. J Chem Phys. 140: 074502. PMID: 24559352
  6. Active Demulsification of Photoresponsive Emulsions Using Cationic-Anionic Surfactant Mixtures.  |  Takahashi, Y., et al. 2016. Langmuir. 32: 683-8. PMID: 26731043
  7. Optical motion control of liquid crystalline droplets by host-guest molecular interaction.  |  Sakai, Y., et al. 2019. Soft Matter. 15: 7159-7165. PMID: 31410429
  8. Analysis of Molecular Disordering Processes in the Phase Transition of Liquid Crystals Observed by Patterned-Illumination Time-Resolved Phase Microscopy.  |  Sato, N. and Katayama, K. 2021. Materials (Basel). 14: PMID: 34639889
  9. Reversible morphology-resolved chemotactic actuation and motion of Janus emulsion droplets.  |  Frank, BD., et al. 2022. Nat Commun. 13: 2562. PMID: 35538083
  10. In Situ Photocontrol of Block Copolymer Morphology During Dip-Coating of Thin Films.  |  Vapaavuori, J., et al. 2015. ACS Macro Lett. 4: 1158-1162. PMID: 35614798

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

4-(4-Butylphenylazo)phenol, 5 g

sc-486706
5 g
$162.00