Skip to Content
Merck

Key Documents

View All Documentation

54793

2-(4-Hydroxyphenylazo)benzoic acid

suitable for matrix substance for MALDI-MS, ≥99.5%

Synonym(s):

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

Sign In to View Organizational & Contract Pricing.

Select a Size

Change View

About This Item

Linear Formula:
HOC6H4N=NC6H4CO2H
CAS Number:
1634-82-8
Molecular Weight:
242.23
EC Number:
216-655-2
UNSPSC Code:
12352200
PubChem Substance ID:
329758061
Beilstein/REAXYS Number:
1842696
MDL number:
MFCD00002428
Assay:
≥99.5% (HPLC), ≥99.5%
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Quality Segment

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

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)

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

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.

Still not finding the right product?

Explore all of our products under 2-(4-Hydroxyphenylazo)benzoic acid

Storage Class

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H315,H319

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library