DL-methionine
The methylthio group is the most distinctive functional group in DL-methionine and can participate in substitution and addition reactions. Alkylation substitution reaction: The sulfur atom in the methylthio group has a lone pair of electrons, making it a nucleophilic site that can react with alkyl halides (e.g., methyl iodide) to form sulfonium salts. This reaction is the basis for the synthesis of methionine derivatives with enhanced biological activity. Cleavage reaction: Under the action of strong nucleophiles (e.g., sodium hydroxide in the presence of hydrogen peroxide) or enzymes (e.g., methionine lyase), the C-S bond in the methylthio group can be cleaved, producing homocysteine and methanethiol. In biological systems, this cleavage reaction is catalyzed by specific enzymes and is a key step in methionine metabolism.
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L-Methionine in Pharmaceutical and Medical Applications |
In pharmaceuticals, L-Methionine is used for therapeutic purposes and as a pharmaceutical excipient, leveraging its metabolic and antioxidant prope... |
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L-Cysteine hydrochloride monohydrate |
Packaging Requirements1. Primary PackagingSealable Bags/Bottles: Use hermetically sealed bags (e.g., foil-lined packages) or airtight bottles with ... |
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L-Threonine |
While not a primary preservative, L-threonine can: Improve the stability of proteins and enzymes in processed foods, reducing degradation. Act as a... |
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L-leucine |
Basic InformationChemical Formula: C6H13NO2Molecular Weight: 131.17 g/molStructure: It has a branched - chain structure with a carboxyl group (-COO... |
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The biological activity of inositol |
Biological Activities of Inositol 1. Regulate lipid metabolism and protect the liver Inositol promotes fat transportation and decomposition, inhibi... |
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