Description

L-Methionine, Methyl Ester, Radical Ion(1+) (9Ci) is a specialized cationic derivative of the essential amino acid methionine. This compound is of significant interest in advanced organic synthesis and biochemical research, particularly in the study of radical chemistry and reaction mechanisms. It serves as a crucial intermediate for researchers and manufacturers in the pharmaceutical, agrochemical, and fine chemical sectors, enabling the development of novel compounds and materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, especially those targeting neurological and metabolic pathways.
• Biochemical Research: Used as a model compound in studies of radical-mediated reactions, enzymatic processes, and amino acid metabolism.
• Agrochemical Synthesis: Intermediate for developing advanced crop protection agents and plant growth regulators.
• Peptide & Protein Chemistry: Serves as a protected or modified methionine derivative in peptide synthesis and protein engineering.
• Material Science: Potential precursor for functionalized polymers and surface coatings with specific chemical properties.
• Analytical Standard: Used as a reference standard in chromatographic analysis (HPLC, LC-MS) for method development and quality control.

Basic Information

Product Name	L-Methionine, Methyl Ester, Radical Ion(1+) (9Ci)
CAS No.	874219-77-9
Molecular Formula	C6H13NO2S+
Molecular Weight	163.24 g/mol
Synonyms	L-Methionine methyl ester radical cation; Methionine methyl ester radical ion; (S)-2-Amino-4-(methylthio)butanoic acid methyl ester radical cation; Methyl L-methioninate radical ion(1+); Methionine methyl ester cation radical; 9CI-labeled L-Methionine methyl ester radical ion; Amino acid ester radical intermediate
EINECS	Contact for details

Quality Control

Our production of L-Methionine, Methyl Ester, Radical Ion(1+) (9Ci) adheres to stringent quality protocols suitable for research and industrial applications. Each batch is characterized using advanced analytical techniques including NMR, HPLC, and mass spectrometry to confirm identity, purity, and radical ion integrity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with every shipment to ensure traceability and support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Related Substances (HPLC)	≤ 5.0% total
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.