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50862

Supelco

Super-DHB

suitable for matrix substance for MALDI-MS, ≥99.0%

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CAS Number:
63542-76-7
UNSPSC Code:
12000000
NACRES:
NA.21

Quality Level

100

Assay

≥99.0% (sum of DHB and 2-hydroxy-5-methoxybenzoic acid, HPLC)
≥99.0%

analyte functional class(es)

polymers

analyte chemical class(es)

glycans, peptides, proteins

technique(s)

MALDI-MS: suitable

solubility

methanol: 1%, clear

cation traces

Ca: ≤5 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤5 mg/kg
Li: ≤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

suitability

suitable for matrix substance for MALDI-MS

Related Categories

General description

The “super-DHB” matrix consists of a 9:1 (w/w) mixture of 2,5-DHB and 2-hydroxy-5-methoxybenzoic acid, respectively, since this ratio was found to be the most effective. The beneficial effect of the 2-hydroxy- 5-methoxybenzoic acid additive is attributed to a disorder in the 2,5-DHB crystal lattice resulting in enhanced ion desorption (i.e. ‘softer′ desorption) and reduced internal energy, which in turn results in reduced metastable fragmentation. An increase in sensitivity of up to 2 to 3-fold has been reported for a standard dextran mixture with concomitant enhanced resolution attributed to reduced metastable ion formation. The super-DHB matrix has also been reported to generate enhanced signals from tryptic glycopeptides. The use of super-DHB matrix is reported to reduce the presence of matrix background ions and result in glycan signals exhibiting better signal to noise ratios and higher resolution in the mass spectrum.

Application


  • Glycan and Protein Analysis of Glycoengineered Bacterial E. coli Vaccines by MALDI-in-Source Decay FT-ICR Mass Spectrometry: This study demonstrates the application of Super-DHB as a matrix in advanced mass spectrometry for the detailed characterization of glycoengineered vaccines, essential for researchers in pharmaceuticals and life science manufacturing (Nicolardi et al., 2022).

  • An Improved Method for Rapid Detection of Mycobacterium abscessus Complex Based on Species-Specific Lipid Fingerprint by Routine MALDI-TOF: Highlights the use of Super-DHB in enhancing the lipid fingerprinting capabilities of MALDI-TOF mass spectrometry, critical for rapid microbial identification in medical microbiology and pharmaceutical research (Jia Khor et al., 2021).

  • Discrimination of bovine milk from non-dairy milk by lipids fingerprinting using routine matrix-assisted laser desorption ionization mass spectrometry: Illustrates the role of Super-DHB in differentiating dairy and non-dairy milks based on lipid profiles using MALDI-MS, vital for food scientists and chemists in quality control and food safety (England et al., 2020).

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Analysis Note

9:1 mixture of DHB and 2-hydroxy-5-methoxybenzoic acid

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Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302

Precautionary Statements

P264 - P270 - P301 + P312 - P501

Hazard Classifications

Acute Tox. 4 Oral

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Sonia Rebollo-Ramirez et al.
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Amyloid-β oligomers (AβOs) self-assemble into polymorphic species with diverse biological activities that are implicated causally to Alzheimer's disease (AD). Synaptotoxicity of AβO species is dependent on their quaternary structure, however, low-abundance and environmental sensitivity of AβOs in vivo have impeded
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There is increasing evidence suggesting that amyloidogenic proteins might form deposits in non-neuronal tissues in neurodegenerative disorders such as Alzheimer's or Parkinson's diseases. However, the detection of these aggregation-prone proteins within the human skin has been controversial. Using immunohistochemistry (IHC)

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