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Merck
CN

06788

2-(4-Hydroxyphenylazo)benzoic acid

≥99.5% (HPLC), Ultra pure

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:
1634-82-8
Molecular Weight:
242.23
EC Number:
216-655-2
UNSPSC Code:
41116105
PubChem Substance ID:
329748280
Beilstein/REAXYS Number:
1842696
MDL number:
MFCD00002428

Key Documents

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Quality Level

100

assay

≥99.5% (HPLC)

form

powder

mp

204-208 °C

solubility

ethanol: 20 mg/mL, clear

cation traces

Ag: ≤1.0 mg/kg, Al: ≤1.0 mg/kg, B: ≤1.0 mg/kg, Ba: ≤1.0 mg/kg, Be: ≤1.0 mg/kg, Bi: ≤1.0 mg/kg, Ca: ≤1.0 mg/kg, Cd: ≤1.0 mg/kg, Co: ≤1.0 mg/kg, Cr: ≤1.0 mg/kg, Cu: ≤1.0 mg/kg, Fe: ≤1.0 mg/kg, Ge: ≤1.0 mg/kg, K: ≤5 mg/kg, Li: ≤1.0 mg/kg, Mg: ≤1.0 mg/kg, Mn: ≤1.0 mg/kg, Na: ≤5 mg/kg, Ni: ≤1.0 mg/kg, Pb: ≤1.0 mg/kg, Sn: ≤1.0 mg/kg, Sr: ≤1.0 mg/kg, Tl: ≤1.0 mg/kg, Zn: ≤1.0 mg/kg

absorption

≥2000 at 337 nm (mol. absorption)

suitability

suitable for matrix substance for MALDI-MS

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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Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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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
Joan-Antoni Farrera et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 14(7), 2277-2285 (2007-12-29)
The tautomeric equilibria of 2-(4'-hydroxyphenylazo)benzoic acid (HABA) and 2-(3',5'-dimethyl-4'-hydroxyphenylazo)benzoic acid (3',5'-dimethyl-HABA) have been studied by a combination of spectroscopic and computational methods. For neutral HABA in solvents of different polarity (toluene, chloroform, DMSO, DMF, butanol, and ethanol) the azo tautomer
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
Juha A E Määttä et al.
Chembiochem : a European journal of chemical biology, 9(7), 1124-1135 (2008-04-03)
Chicken avidin is a key component used in a wide variety of biotechnological applications. Here we present a circularly permuted avidin (cpAvd4-->3) that lacks the loop between beta-strands 3 and 4. Importantly, the deletion of the loop has a positive
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Global Trade Item Number

SKUGTIN
C47000-100G04061833492604

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