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Merck

85707

Supelco

2,5-Dihydroxybenzoesäure

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

Synonym(e):

2,5-DHBA, DHB, Gentisinsäure, Hydrochinoncarbonsäure

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10 MG
CHF 28.20
250 MG
CHF 120.00
1 G
CHF 303.00

CHF 28.20


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10 MG
CHF 28.20
250 MG
CHF 120.00
1 G
CHF 303.00

About This Item

Lineare Formel:
(HO)2C6H3CO2H
CAS-Nummer:
Molekulargewicht:
154.12
Beilstein:
2209119
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12000000
PubChem Substanz-ID:
NACRES:
NA.21

CHF 28.20


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Qualität

matrix substance for MALDI-MS

Assay

>99.0% (HPLC)

Form

powder

Funktionsklasse(n) des Analyten

polymers

chemische Klasse(n) des Analyten

glycans, lipids, organic molecules, peptides, proteins

Methode(n)

MALDI-MS: suitable

mp (Schmelzpunkt)

200-207 °C
204-208 °C (lit.)

Kationenspuren

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 (Extinktionskoeffizient)

>2000 at 337 nm

Eignung

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)

InChIKey

WXTMDXOMEHJXQO-UHFFFAOYSA-N

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Anwendung

2,5-Dihydroxybenzoesäure ist eine ionische Flüssigkeitsmatrix, die für die Analyse von Biomolekülen mittels matrixgestützter Laserdesorption/-ionisation in Kombination mit Massenspektrometrie eingesetzt wird.[1]
Am häufigsten verwendete Matrix für Kohlenhydrate. Zur MALDI-MS von freien neutralen Glykanen. Erzeugt ein [M+Na]+-Ion; kann ein schwächeres [M+K]+-Ion aufweisen. Andere Spezies können durch Zugabe des entsprechenden anorganischen Salzes erzeugt werden.[2]

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Piktogramme

Exclamation mark

Signalwort

Warning

H-Sätze

Gefahreneinstufungen

Acute Tox. 4 Oral

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Persönliche Schutzausrüstung

dust mask type N95 (US), Eyeshields, Gloves


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Die Dokumentenbibliothek aufrufen

2,5-Dihydroxybenzoic acid butylamine and other ionic liquid matrixes for enhanced MALDI-MS analysis of biomolecules
Mank M, et al.
Analytical Chemistry, 76(10), 2938-2950 (2004)
Matrix-assisted laser desorption/ionization mass spectrometry with additives to 2,5-di-hydroxy-benzoic acid.
Karas, M., et al.,
Org. Mass Spectrom., 28, 1476-1481 (1993)
Naoki Sato
Plant & cell physiology, 56(10), 1890-1899 (2015-08-16)
Monogalactosyldiacylglycerol (MGDG) is ubiquitous in the photosynthetic membranes of cyanobacteria and chloroplasts. It is synthesized by galactosylation of diacylglycerol (DAG) in the chloroplasts, whereas it is produced by epimerization of monoglucosyldiacylglycerol (GlcDG) in at least several cyanobacteria that have been
B E Cham et al.
Clinical chemistry, 26(1), 111-114 (1980-01-01)
We have developed a specific and sensitive method for the determination of salicylic acid, salicyluric acid, and gentisic acid in urine. Any proteins present are precipitated with methyl cyanide. After centrifugation, an aliquot of the supernate is directly injected into
F Bochner et al.
Clinical pharmacology and therapeutics, 30(2), 266-275 (1981-08-01)
Single oral doses of aspirin (ASA, 1,500 mg), sodium salicylate (NaSA, 1,500 mg, 1,200 mg), and salicyluric acid (SUA, 500 mg) were given to five subjects. Serial plasma and urine samples were collected for 24 hr (plasma) and up to

Protokolle

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

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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