L-Methionine

• Product NameL-Methionine
  CAS No.63-68-3
  Purity
  Min Quantity
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  Molecular Structure

Detailed Description

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Name: L-Methionine
Synonyms: L-2-Amino-4-(methylthio)butyric acid
Molecular Formula: C5H11NO2S
Molecular Weight: 149.21
CAS Registry Number: 63-68-3
Appearance White crystals or crystalline powder
Identification Meets the requirements
Assay 98.5% ~ 101.5%
Specific rotation +22.4degree ~ +24.7degree
Chloride(Cl) NMT 0.05%
Sulfate(SO4) NMT 0.03%
Iron(Fe) NMT 0.003%
Heavy metals, as Pb NMT 15ppm
Loss on drying NMT 0.30%
Residue on ignition NMT 0.4%
Chromatographic purity
Not more than 0.5% of any individual
impurity is found;
Not more than 2.0% of total impurities is
found
Organic volatile impurities Meets the requirements
pH 5.6 ~ 6.1
Use:As an essential amino acid, methionine is not synthesized de novo in humans, who must ingest methionine or methionine-containing proteins. In plants and microorganisms, methionine is synthesized via a pathway that uses both aspartic acid and cysteine.
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• L-Methionine