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54793 Sigma-Aldrich

2-(4-Hydroxyphenylazo)benzoic acid

matrix substance for MALDI-MS, ≥99.5%

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

  • CAS Number 1634-82-8

  • Linear Formula HOC6H4N=NC6H4CO2H

  • Molecular Weight 242.23

  •  Beilstein Registry Number 1842696

  •  EC Number 216-655-2

  •  MDL number MFCD00002428

  •  PubChem Substance ID 329758061

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Mass Spectrometry, Mass Spectrometry (MS), Matrices for MALDI Analysis,
grade   matrix substance for MALDI-MS
InChI Key   DWQOTEPNRWVUDA-CCEZHUSRSA-N
assay   ≥99.5% (HPLC)
  ≥99.5%
mp   204-208 °C(lit.)
  204-208 °C
solubility   ethanol: soluble20 mg/mL, clear
cation traces   Ca: ≤10 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤50 mg/kg
  K: ≤50 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Na: ≤100 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Zn: ≤5 mg/kg
absorption   absorption/337 nm ≥2000 (mol. absorption)
analyte suitability   glycans
  peptides
  polymers
  proteins

Description

General description

2-(4-Hydroxyphenylazo)benzoic acid) (HABA), can be used for desorption of proteins, peptides and glycoproteins, thereby making it very advantageous for matrix-assisted laser desorption ionization mass spectrometry.

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Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
3
Protocols & Articles
Peer-Reviewed Papers
15

References

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