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06788

Supelco

2-(4-Hydroxyphenylazo)benzoic acid

matrix substance for MALDI-MS, ≥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
Beilstein/REAXYS Number:
1842696
EC Number:
216-655-2
MDL number:
MFCD00002428
UNSPSC Code:
41116105
PubChem Substance ID:
329748280

grade

matrix substance for MALDI-MS

Quality Level

100

assay

≥99.5% (HPLC)

form

powder

mp

204-208 °C (lit.)
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)

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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replaced by

Product No.
Description
Pricing

Storage Class

11 - Combustible Solids

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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Certificates of Analysis (COA)

Lot/Batch Number
1338889
093996/1
93996/1

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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
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
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
Nathan W Moore et al.
Langmuir : the ACS journal of surfaces and colloids, 24(4), 1212-1218 (2007-12-18)
According to classical thermodynamics, biological ligand-receptor bonds should have a median lifetime of about 2 ms, and nearly half should have lifetimes of nanoseconds to microseconds. As a result, it is clear that many "weak" bonds are indispensable for cellular
Cedric Przybylski et al.
Glycobiology, 20(2), 224-234 (2009-10-28)
Polysulfated carbohydrates such as heparin (HP) and heparan sulfate (HS) are not easily amenable to usual ultraviolet matrix-assisted laser desorption/ionization-mass spectrometry (UV-MALDI)-MS analysis due to the thermal lability of their O- and N-SO(3) moieties, and their poor ionization efficiency with
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