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85707

2,5-Dihydroxybenzoic acid

Name: 2,5-Dihydroxybenzoic acid
Brand: SIGMA

suitable for matrix substance for MALDI-MS, >99.0% (HPLC)

Synonym(s):

2,5-DHBA, DHB, Gentisic acid, Hydroquinonecarboxylic acid

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About This Item

Linear Formula:

(HO)₂C₆H₃CO₂H

CAS Number:

490-79-9

Molecular Weight:

154.12

UNSPSC Code:

41115716

NACRES:

NA.21

PubChem Substance ID:

329769406

EC Number:

207-718-5

Beilstein/REAXYS Number:

2209119

MDL number:

MFCD00002460

Assay:

>99.0% (HPLC)

Form:

powder

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Properties

Quality Level

100

assay

>99.0% (HPLC)

form

powder

analyte functional class(es)

polymers

analyte chemical class(es)

glycans, lipids, organic molecules, peptides, proteins

technique(s)

MALDI-MS: suitable

mp

200-207 °C, 204-208 °C (lit.)

cation traces

Ba: ≤5 mg/kg, Ca: ≤5 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, K: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

ε (extinction coefficient)

>2000 at 337 nm

suitability

suitable for matrix substance for MALDI-MS

SMILES string

OC(=O)c1cc(O)ccc1O

InChI

1S/C7H6O4/c8-4-1-2-6(9)5(3-4)7(10)11/h1-3,8-9H,(H,10,11)

InChI key

WXTMDXOMEHJXQO-UHFFFAOYSA-N

Description

Application

2,5-Dihydroxybenzoic acid is an ionic liquid matrix used for the analysis of biomolecules using matrix-assisted laser desorption/ionization combined with mass spectrometry.

Most commonly used matrix for carbohydrates. For MALDI-MS of free neutral glycans. Produces [M+Na]⁺ ion; may show a weaker [M+K]⁺ ion. Other species may be generated by the addition of the appropriate inorganic salt.

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pictograms

GHS07

signalword

Warning

hcodes

H302

pcodes

P264 - P270 - P301 + P312 - P501

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk

WGK 3

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

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Protocols

聚糖的质谱

该聚糖质谱分析方案，被称之为干液滴法，基于原始的MALDI实验并依然是MS领域中最常用的方法。

Mass Spectrometry of Glycans

Explore mass spectrometry analysis of glycans for glycomic & glycoproteomic neutral & acidic glycan analysis. See a general mass spec glycan analysis procedure.

Global Trade Item Number

SKU	GTIN
85707-250MG-F	04061833027486
85707-10MG-F	04061833027264
85707-1G-F	04061833027370