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Merck
CN

05689

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
UNSPSC Code:
41116105
NACRES:
NA.22
PubChem Substance ID:
329748147
EC Number:
201-725-7
Beilstein/REAXYS Number:
880058
MDL number:
MFCD00009148

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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

SMILES string

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

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.)

Quality Level

100

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Analysis Note

identification (LC-MS): identity conforms

Other Notes

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

pictograms

Exclamation markEnvironment
GHS07,GHS09

signalword

Warning

Hazard Classifications

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

Storage Class

10 - Combustible liquids

wgk

WGK 1

flash_point_f

291.2 °F - closed cup

flash_point_c

144 °C - closed cup

Regulatory Information

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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
J L Ordóñez et al.
Food chemistry, 178, 221-228 (2015-02-24)
This paper studies the amino acid profile of beverages obtained through the fermentation of strawberry purée by a surface culture using three strains belonging to different acetic acid bacteria species (one of Gluconobacter japonicus, one of Gluconobacter oxydans and one
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
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