54793

2-(4-Hydroxyphenylazo)benzoic acid

matrix substance for MALDI-MS, ≥99.5%

• Synonym(s): 2-(4′-Hydroxybenzeneazo)benzoic acid, 4′-Hydroxyazobenzene-2-carboxylic acid, HABA, HBABA
• Linear Formula: HOC₆H₄N=NC₆H₄CO₂H
• CAS Number: 1634-82-8
• Molecular Weight: 242.23
• Beilstein: 1842696
• EC Number: 216-655-2
• MDL number: MFCD00002428
• PubChem Substance ID: 329758061

Properties

• grade: matrix substance for MALDI-MS
• Quality Level: 100
• assay: ≥99.5% (HPLC); ≥99.5%
• analyte functional class(es): polymers
• analyte chemical class(es): glycans, peptides, proteins
• technique(s): MALDI-MS: suitable
• mp: 204-208 °C (lit.); 204-208 °C
• solubility: ethanol: 20 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: ≥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

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.[1]

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves