Description

D-Methionine Methyl Ester is a chiral, non-proteinogenic amino acid derivative of significant industrial and research interest. This high-purity intermediate is valued for its role in the synthesis of more complex molecules, particularly in the pharmaceutical and agrochemical sectors. It serves as a critical building block for researchers and manufacturers developing chiral drugs, peptide mimetics, and specialized feed additives, where the specific D-configuration is essential for biological activity or metabolic stability.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the asymmetric synthesis of active pharmaceutical ingredients (APIs), especially for antibiotics and metabolic regulators.
• Peptide Chemistry: Used in the preparation of modified peptides and peptidomimetics for drug discovery and biochemical research.
• Agrochemical Synthesis: Serves as a precursor in the manufacture of certain chiral herbicides and plant growth regulators.
• Nutritional Research: Employed in metabolic studies and the development of specialized animal feed formulations.
• Chemical Biology Tool: Utilized as a probe or building block in studying enzyme mechanisms and metabolic pathways.
• Fine Chemical Production: An intermediate for manufacturing other high-value, optically active methionine derivatives.

Basic Information

Product Name	D-Methionine Methyl Ester
CAS No.	21691-49-6
Molecular Formula	C6H13NO2S
Molecular Weight	163.24 g/mol
Synonyms	(2R)-2-Amino-4-(methylsulfanyl)butanoic acid methyl ester; Methyl (R)-2-amino-4-(methylthio)butyrate; D-(-)-Methionine methyl ester; (R)-Methionine methyl ester; Methyl D-methioninate; D-Met-OMe; H-D-Met-OMe; (R)-2-Amino-4-(methylmercapto)butyric acid methyl ester
EINECS	Contact for details

Quality Control

Our D-Methionine Methyl Ester is produced under strict quality management systems to ensure batch-to-batch consistency and high chemical purity. Each lot is subjected to comprehensive analytical testing, including chiral purity assessment by HPLC, identity confirmation by IR and NMR, and stringent control of residual solvents and impurities. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under dry, inert conditions to prevent decomposition. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥98.0%
Chiral Purity (HPLC)	≥99.0% (D-isomer)
Loss on Drying	≤1.0%
Residue on Ignition	≤0.1%
Heavy Metals	≤20 ppm

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