Description

L-Methionine, n-[1-[[(1,1-Dimethylethyl)Amino]Carbonyl]-2-Methylpropyl]-, Methyl Ester, (S)- (9Ci) is a specialized, high-purity synthetic amino acid derivative designed for advanced research and pharmaceutical development. This compound serves as a critical chiral building block and intermediate in the synthesis of complex peptides and active pharmaceutical ingredients (APIs). It is essential for researchers and manufacturers in the pharmaceutical, biotechnology, and fine chemical sectors who require precise molecular control and high stereochemical purity for their synthetic pathways.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the multi-step synthesis of novel peptide-based drugs and therapeutic agents.
• Biochemical Research: Used as a substrate or precursor in enzymatic studies, metabolic pathway research, and proteomics.
• Peptide Synthesis: Serves as a protected methionine derivative in solid-phase and solution-phase peptide synthesis for constructing specific peptide sequences.
• API Development: Employed in the research and development of new Active Pharmaceutical Ingredients (APIs), particularly those targeting neurological or metabolic disorders.
• Asymmetric Synthesis: Utilized as a starting material or auxiliary in catalytic asymmetric synthesis to introduce chirality into target molecules.
• Reference Standard: Acts as a high-purity analytical standard for quality control and method development in pharmaceutical laboratories.

Basic Information

Item	Details
Product Name	L-Methionine, n-[1-[[(1,1-Dimethylethyl)Amino]Carbonyl]-2-Methylpropyl]-, Methyl Ester, (S)- (9Ci)
CAS No.	169453-05-8
Molecular Formula	C12H24N2O3S
Molecular Weight	276.40 g/mol
Synonyms	Boc-L-Methionine Methyl Ester; (S)-Methyl 2-((tert-Butoxycarbonyl)amino)-4-(methylthio)butanoate; Boc-Met-OMe; N-Boc-L-Methionine Methyl Ester; N-(tert-Butoxycarbonyl)-L-methionine Methyl Ester; Boc-L-Met-OMe; tert-Butyloxycarbonyl-L-methionine Methyl Ester; L-Methionine, N-[(1,1-dimethylethoxy)carbonyl]-, methyl ester
EINECS	Contact for details

Quality Control

Our L-Methionine derivative is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity analysis by HPLC, to ensure it meets the stringent requirements for pharmaceutical R&D and synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming identity, purity, and conformity to 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 (typically 15-25°C). This material is hygroscopic (moisture-sensitive) and should be handled under dry conditions to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0%
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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