Description

D-Cysteine, S-(2-Aminoethyl)- (9Ci) is a specialized, non-proteinogenic amino acid derivative featuring a unique chiral center and a thioether-linked aminoethyl side chain. This compound is valued for its role as a key chiral building block and biochemical probe in advanced research and synthesis. It is primarily utilized by researchers and manufacturers in the pharmaceutical, biotechnology, and fine chemical sectors for applications such as peptide modification, enzyme studies, and the development of diagnostic agents.

Application

• Pharmaceutical Intermediate: Serves as a critical chiral precursor in the synthesis of novel drug candidates, particularly those targeting neurological and metabolic pathways.
• Biochemical Research: Used as a probe or substrate in enzymatic studies to investigate cysteine protease mechanisms and protein-protein interactions.
• Peptide Synthesis: Employed for the site-specific introduction of modified cysteine residues into synthetic peptides, altering their stability, reactivity, or binding properties.
• Diagnostic Agent Development: Acts as a component in the design of contrast agents or molecular probes for imaging and diagnostic applications.
• Fine Chemical Synthesis: Utilized as a specialized building block for creating complex, chiral molecules in asymmetric synthesis.

Basic Information

Product Name	D-Cysteine, S-(2-Aminoethyl)- (9Ci)
CAS No.	53526-71-9
Molecular Formula	C5H12N2O2S
Molecular Weight	164.22 g/mol
Synonyms	S-(2-Aminoethyl)-D-cysteine; D-Thialysine; (R)-2-Amino-3-(2-aminoethylsulfanyl)propanoic acid; D-S-Aminoethylcysteine; D-AEC; (R)-AEC; D-2-Amino-3-(2-aminoethylthio)propionic acid; D-Lanthionine, S-aminoethyl-
EINECS	Contact for details

Quality Control

Our D-Cysteine, S-(2-Aminoethyl)- (9Ci) is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chiral purity verification by HPLC, to ensure it meets the high standards required for research and synthesis. A Certificate of Analysis (COA) detailing identity, purity, and specific test results is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent degradation from atmospheric moisture.

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%

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