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Supelco

Diethyl ethoxymethylenemalonate

for LC-MS derivatization, LiChropur™, ≥97.0% (GC)

Synonym(s):

DEEMM, Ethoxymethylenemalonic acid diethyl ester

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About This Item

Linear Formula:
C2H5OCH=C(COOC2H5)2
CAS Number:
87-13-8
Molecular Weight:
216.23
Beilstein:
880058
EC Number:
201-725-7
MDL number:
MFCD00009148
UNSPSC Code:
41116105
PubChem Substance ID:
329748147
NACRES:
NA.22

Quality Level

100

Assay

≥97.0% (GC)

form

liquid

quality

LiChropur™

technique(s)

LC/MS: suitable

refractive index

n20/D 1.462 (lit.)

bp

279-281 °C (lit.)

density

1.07 g/mL at 25 °C (lit.)

SMILES string

CCO\C=C(\C(=O)OCC)C(=O)OCC

InChI

1S/C10H16O5/c1-4-13-7-8(9(11)14-5-2)10(12)15-6-3/h7H,4-6H2,1-3H3

InChI key

LTMHNWPUDSTBKD-UHFFFAOYSA-N

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Analysis Note

identification (LC-MS): identity conforms

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Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Pictograms

Exclamation markEnvironment
GHS07,GHS09

Signal Word

Warning

Hazard Statements

H302,H315,H317,H319,H410

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 2 - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1A

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

291.2 °F - closed cup

Flash Point(C)

144 °C - closed cup

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Certificates of Analysis (COA)

Lot/Batch Number
BCCG6983
BCCD6959
BCCD0804
BCBV9197
BCBW8264

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Riin Rebane et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 904, 99-106 (2012-08-15)
Amino acid analysis with high performance liquid chromatography with electrospray ionization mass spectrometry (LC-ESI-MS) is an emerging method. For more sensitive analysis, derivatization is used and next to commercially available derivatization reagents such as dansyl chloride (DNS), 9-fluorenylmethyl chloroformate (FMOC-Cl)
Marta Perez et al.
Applied microbiology and biotechnology, 99(8), 3547-3558 (2014-12-23)
Enterococcus faecalis is a commensal bacterium of the human gut that requires the ability to pass through the stomach and therefore cope with low pH. E. faecalis has also been identified as one of the major tyramine producers in fermented
Cristina Megías et al.
Talanta, 131, 95-98 (2014-10-05)
A method for determination of the non-protein amino acid l-α-amino-γ-(guanidinooxy)-n-butyric acid (L-canavanine) and other free amino acids in Vicia disperma is presented. Seed extracts were derivatized by reaction with diethyl ethoxymethylenemalonate and analyzed by reverse-phase high-performance liquid chromatography. Calibration curves
Maarja-Liisa Oldekop et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 967, 147-155 (2014-08-12)
For liquid chromatographic analysis of amino acids involving derivatization and mass-spectrometric detection, it becomes more important to evaluate the presence of matrix effects in complex samples. This is somewhat complicated for amino acid analysis where analyte free sample matrix is
Patricia Alvarez-Sieiro et al.
Food chemistry, 168, 439-444 (2014-08-31)
For patients with celiac disease, gliadin detoxification via the use of gliadinases may provide an alternative to a gluten-free diet. A culture medium, in which gliadins were the sole source of nitrogen, was developed for screening for microorganisms with gliadinase
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