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54793

Supelco

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:
Molecular Weight:
242.23
Beilstein:
1842696
EC Number:
MDL number:
PubChem Substance ID:

grade

matrix substance for MALDI-MS

Quality Level

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

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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]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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