MilliporeSigma
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64340

Sigma-Aldrich

DL-Methionine

≥99.0% (NT)

Synonym(s):
(±)-2-Amino-4-(methylmercapto)butyric acid, DL-2-Amino-4-(methylthio)butanoic acid
Linear Formula:
CH3SCH2CH2CH(NH2)COOH
CAS Number:
Molecular Weight:
149.21
Beilstein:
636185
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.26

Quality Level

assay

≥99.0% (NT)

form

powder or crystals

optical activity

[α]/D, c = 5 in 5 M HCl (inactive)

concentration

5% in 5 M HCl

ign. residue

≤0.05%

color

white

mp

280 °C (dec.) (lit.)

solubility

5 M HCl: 1 g/10 mL, clear, colorless to almost colorless

suitability

corresponds for TLC

application(s)

peptide synthesis

SMILES string

CSCCC(N)C(O)=O

InChI

1S/C5H11NO2S/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)

InChI key

FFEARJCKVFRZRR-UHFFFAOYSA-N

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Application

DL-Methionine has been used to study the susceptibility of methionine to oxidation during the development of monoclonal antibodies.

Packaging

100, 500 g in poly bottle
1 kg in poly bottle

Biochem/physiol Actions

Methionine is an essential amino acid which acts a precursor for transmethylation and transsulfuration. In proteins, L-methionine is the biologically active form. D-methionine is converted to L-methionine by enzymes in the body. The adenosylation of methionine results in the formation of S-adenosyl-L-methionine (SAM), which serves as a methyl donor to various substances. L-Methionine′s metabolic product glutathione is known to regulate immune response and has antiviral action.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

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