Description

L-Alanine, 3-Sulfino-, 1-Methyl Ester (9Ci) is a specialized, high-purity synthetic amino acid derivative of significant interest in advanced chemical synthesis and pharmaceutical research. This compound serves as a critical chiral building block and intermediate for the development of novel bioactive molecules, including enzyme inhibitors and peptide mimetics. It is primarily utilized by research institutions, pharmaceutical R&D departments, and fine chemical manufacturers focused on innovative drug discovery and process chemistry.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for targeted therapies.
• Biochemical Research: Used as a substrate or inhibitor in enzymatic studies and proteomics research to investigate metabolic pathways.
• Peptide Synthesis: Serves as a modified amino acid building block for the solid-phase or solution-phase synthesis of non-natural peptides with enhanced stability or activity.
• Ligand Development: Employed in the design and synthesis of novel chelating agents or catalysts for asymmetric synthesis.
• Reference Standard: Used as a high-purity analytical standard in quality control laboratories for method development and validation.

Basic Information

Product Name	L-Alanine, 3-Sulfino-, 1-Methyl Ester (9Ci)
CAS No.	320370-20-5
Molecular Formula	C4H9NO4S
Molecular Weight	167.18 g/mol
Synonyms	1-Methyl L-alanine-3-sulfinate; (2S)-2-Amino-3-sulfinopropanoic acid 1-methyl ester; L-3-Sulfinoalanine methyl ester; Methyl (2S)-2-amino-3-sulfinopropanoate; 3-Sulfino-L-alanine methyl ester; Alanine, 3-sulfino-, methyl ester, L-; Methyl L-3-sulfinoalaninate
EINECS	Contact for details

Quality Control

Our L-Alanine, 3-Sulfino-, 1-Methyl Ester (9Ci) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification and impurity profiling by HPLC, to ensure it meets the stringent requirements for research and development applications. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming identity, purity, and conformance to 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 maintain stability and purity. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Chiral Purity (HPLC)	≥ 98.0% ee
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.5%

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