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Key Documents

K6000

Sigma-Aldrich

α-Keto-γ-(methylthio)butyric acid sodium salt

≥97%

Synonym(s):

4-Methylthio-2-oxobutanoic acid sodium salt, 4-Methylthio-2-oxobutyric acid sodium salt, KMBA

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About This Item

Linear Formula:
C5H7O3SNa
CAS Number:
Molecular Weight:
170.16
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Quality Level

Assay

≥97%

storage temp.

2-8°C

SMILES string

[Na].CSCCC(=O)C(O)=O

InChI

1S/C5H8O3S.Na/c1-9-3-2-4(6)5(7)8;/h2-3H2,1H3,(H,7,8);/q;+1/p-1

InChI key

IFSCKRWNXKWTLR-UHFFFAOYSA-M

Related Categories

General description

α-Keto-γ-methylthiobutyric acid (KMTB) is a keto derivative of L-methionine that shows considerable potential as a substitute for L-methionine. The sodium salt of KMTB can be employed in nucleophilic substitution reactions. Additionally, it acts as a building block for the synthesis of amino acids, peptides, and other complex organic compounds.

Application


  • Measuring antioxidant capacity using the ORAC and TOSC assays.: This study details the use of α-Keto-γ-(methylthio)butyric acid sodium salt in assessing antioxidant capacity through ORAC and TOSC assays, emphasizing its utility in metabolic and chemical synthesis research (Garrett AR et al., 2010).

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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D R Livingstone et al.
Marine environmental research, 50(1-5), 57-60 (2001-07-20)
The present study investigated the proposed involvement of contaminant-stimulated reactive oxygen species (ROS) production in disease processes in fish. NAD(P)H-dependent ROS production of subcellular fractions was determined by the iron/EDTA-mediated oxidation of 2-keto-4-methiolbutyric acid. Hepatic cytosolic NADPH-dependent and microsomal NAD(P)H-dependent
Baiqing Tang et al.
Biochemical pharmacology, 72(7), 806-815 (2006-07-28)
4-Methylthio-2-oxobutanoic acid (MTOB) is the final compound of the methionine salvage pathway that converts the polyamine byproduct methylthioadenosine to adenine and methionine. Here we find that MTOB inhibits growth of several human cell lines in a dose-dependent manner. Growth inhibition
Z Findrik et al.
Biotechnology and bioengineering, 98(5), 956-967 (2007-05-31)
D-Methionine was converted to L-methionine in a reaction system where four enzymes were used. D-amino acid oxidase (D-AAO) from Arthrobacter protophormiae was used for the complete conversion of D-methionine to 2-oxo-4-methylthiobutyric acid. Catalase was added to prevent 2-oxo-4-methylthiobutyric acid decarboxylation.
Gary W Winston et al.
Comparative biochemistry and physiology. Toxicology & pharmacology : CBP, 139(4), 281-288 (2005-02-03)
During embryogenesis in grass shrimp the capacity to scavenge oxyradicals increased as measured by the Total Oxyradical Scavenging Capacity (TOSC) assay. The increase in TOSC during embryogenesis was associated with increasing concentrations of a number of antioxidants, including coenzyme Q
Manas K Chattopadhyay et al.
Proceedings of the National Academy of Sciences of the United States of America, 102(45), 16158-16163 (2005-11-02)
Methylthioadenosine is formed during the biosynthesis of spermidine and of spermine and is metabolized by methylthioadenosine phosphorylase, an enzyme missing in several tumor cell lines. In Saccharomyces cerevisiae, this enzyme is coded by the MEU1 gene. We have now studied

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