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Merck
CN

219339

L-Ethionine

98%

Synonym(s):

L-2-Amino-4-(ethylthio)butyric acid

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About This Item

Linear Formula:
C2H5SCH2CH2CH(NH2)CO2H
CAS Number:
Molecular Weight:
163.24
UNSPSC Code:
12352103
PubChem Substance ID:
EC Number:
235-966-4
MDL number:
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InChI key

GGLZPLKKBSSKCX-YFKPBYRVSA-N

InChI

1S/C6H13NO2S/c1-2-10-4-3-5(7)6(8)9/h5H,2-4,7H2,1H3,(H,8,9)/t5-/m0/s1

SMILES string

CCSCC[C@H](N)C(O)=O

assay

98%

optical activity

[α]22/D +21.7°, c = 1 in 1 M HCl

mp

280 °C (dec.) (lit.)

Biochem/physiol Actions

An analog of methionine that interferes with the normal methylation of DNA and other methylation pathways, and induces pancreatic toxicity and liver cancer. However, in animal studies, it has also been shown to act synergistically with methionine-depletion to block the growth and metastasis of methionine-dependent tumors.

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signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Erik Alm et al.
Analytical and bioanalytical chemistry, 403(2), 443-455 (2012-03-01)
In (1)H NMR metabolomic datasets, there are often over a thousand peaks per spectrum, many of which change position drastically between samples. Automatic alignment, annotation, and quantification of all the metabolites of interest in such datasets have not been feasible.
Yiannis N Kallis et al.
Gut, 60(4), 525-533 (2010-11-26)
In advanced liver damage, hepatic regeneration can occur through proliferation of a resident hepatic progenitor cell (HPC) population. HPCs are located within a designated niche in close association with myofibroblasts and bone marrow (BM) derived macrophages. Extra-cellular matrix (ECM) laminin
Moncef Benkhalifa et al.
Fertility and sterility, 93(5), 1585-1590 (2009-04-14)
To investigate whether homocysteine, a well known inhibitor of methylation, which is produced after imprinting and other methylation processes, can be recycled to methionine in the oocyte, at least until the stage of maternal to zygotic transition (i.e., four- to
Joanne N Tonkin et al.
Stem cell research, 1(3), 195-204 (2009-04-23)
Liver progenitor (oval) cells have enormous potential in the treatment of patients with liver disease using a cell therapy approach, but their use is limited by their scarcity and the number of donor livers from which they can be derived.
Shuntaro Ikeda et al.
The Journal of reproduction and development, 58(1), 91-97 (2011-11-05)
The roles of methionine metabolism in bovine preimplantation embryo development were investigated by using ethionine, an antimetabolite of methionine. In vitro produced bovine embryos that had developed to the 5-cell stage or more at 72 h after the commencement of

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