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H5126

Sigma-Aldrich

2-(4-Hydroxyphenylazo)benzoic acid

≥90% (HPLC)

Synonym(s):

2-(4′-Hydroxybenzeneazo)benzoic acid, 4′-Hydroxyazobenzene-2-carboxylic acid, HABA, HBABA

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About This Item

Linear Formula:
HOC6H4N=NC6H4CO2H
CAS Number:
Molecular Weight:
242.23
Beilstein/REAXYS Number:
1842696
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

≥90% (HPLC)

mp

204-208 °C (lit.)

solubility

ethanol: 20 mg/mL, clear to hazy, orange to very deep orange

SMILES string

Oc1ccc(cc1)\N=N\c2ccccc2C(O)=O

InChI

1S/C13H10N2O3/c16-10-7-5-9(6-8-10)14-15-12-4-2-1-3-11(12)13(17)18/h1-8,16H,(H,17,18)/b15-14+

InChI key

DWQOTEPNRWVUDA-CCEZHUSRSA-N

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Related Categories

Application

2-(4-Hydroxyphenylazo)benzoic acid may be used in the preparation of:
  • 2-((4-(3,4-dicyanophenoxy)phenyl)diazenyl)benzoic acid
  • 2,2′-((((4,5-dicyano-1,2-phenylene)bis(oxy))bis(4,1-phenylene))bis(diazene-2,1-diyl)) dibenzoic acid
  • a multifunctional benzoxazine monomer

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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New water soluble phenoxy phenyl diazenyl benzoic acid substituted phthalocyanine derivatives: Synthesis, antioxidant activities, atypical aggregation behavior and electronic properties.
Agirtas MS, et al.
Dyes and Pigments, 99(2), 423-431 (2013)
Multifunctional polybenzoxazine nanocomposites containing photoresponsive azobenzene units, catalytic carboxylic acid groups, and pyrene units capable of dispersing carbon nanotubes.
Mohamed MG, et al.
Royal Society of Chemistry Advances, 5(56), 45201-45212 (2015)
Noritaka Kato et al.
The journal of physical chemistry. B, 109(42), 19604-19612 (2006-07-21)
This study reports a homogeneous and competitive fluorescence quenching immunoassay based on gold nanoparticle/polyelectrolyte (Au(NP)/PE) coated latex particles prepared by the layer-by-layer (LbL) technique. First, the resonant energy transfer from a layer of fluorescent PEs to Au(NP) in LbL assembled
M A Domin et al.
Rapid communications in mass spectrometry : RCM, 13(4), 222-226 (1999-03-31)
The ability to rapidly identify the taxonomic class of the wide variety of microorganisms involved in human and animal disease is becoming increasingly important, especially with the increasing development of resistance to the antibiotics which form the main defence against
Kai Qi et al.
Journal of the American Chemical Society, 126(21), 6599-6607 (2004-05-27)
Shell cross-linked nanoparticles (SCKs) presenting surface- and bioavailable biotin functional groups were synthesized via a mixed micelle methodology, whereby co-micellization of chain terminal biotinylated poly(acrylic acid)-b-poly(methyl acrylate) (PAA-b-PMA) and nonbiotinylated PAA-b-PMA were cross-linked in an intramicellar fashion within the shell

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