Merck
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M9625

Sigma-Aldrich

L-Methionine

reagent grade, ≥98% (HPLC)

Synonym(s):
(S)-2-Amino-4-(methylmercapto)butyric acid, L-2-Amino-4-(methylthio)butanoic acid
Linear Formula:
CH3SCH2CH2CH(NH2)CO2H
CAS Number:
Molecular Weight:
149.21
Beilstein:
1722294
EC Number:
MDL number:
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.26

grade

reagent grade

Quality Level

Assay

≥98% (HPLC)

form

powder

color

white

mp

284 °C (dec.) (lit.)

application(s)

detection

SMILES string

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

InChI

1S/C5H11NO2S/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)/t4-/m0/s1

InChI key

FFEARJCKVFRZRR-BYPYZUCNSA-N

Gene Information

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1 of 4

This Item
64319M5308PHR1241
L-Methionine reagent grade, ≥98% (HPLC)

Sigma-Aldrich

M9625

L-Methionine

L-Methionine BioUltra, ≥99.5% (NT)

Sigma-Aldrich

64319

L-Methionine

L-Methionine from non-animal source, meets EP, JP, USP testing specifications, suitable for cell culture, 99.0-101.0%

Sigma-Aldrich

M5308

L-Methionine

L-Methionine Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1241

L-Methionine

grade

reagent grade

grade

-

grade

-

grade

certified reference material, pharmaceutical secondary standard

assay

≥98% (HPLC)

assay

≥99.5% (NT)

assay

99.0-101.0%

assay

-

form

powder

form

powder or crystals

form

powder

form

-

color

white

color

white

color

white

color

-

mp

284 °C (dec.) (lit.)

mp

284 °C (dec.) (lit.)

mp

284 °C (dec.) (lit.)

mp

284 °C (dec.) (lit.)

Quality Level

200

Quality Level

200

Quality Level

300

Quality Level

300

Application

L-Methionine has been used in chloramine assay and malonaldehyde assay. It has also been used as a standard in methionine assay.

Biochem/physiol Actions

L-Methionine serves as precursor for transmethylation and transsulphuration. Methionine adenosylation results in the formation of S-adenosyl-L-methionine (SAM). SAM serves as a methyl donor to a number of substances. This methylation is significantly associated with the immune system functioning. Thus, SAM deficiency causes severe combined immunodeficiencies. L-Methionine′s metabolic product, glutathione, is known to regulate immune response and has antiviral action.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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