Description

S-[2-(4-Pyridyl)Ethyl]-L-Cysteine is a specialized, non-proteinogenic amino acid derivative featuring a pyridylethyl moiety attached to the cysteine sulfur atom. This unique structure makes it a valuable chiral building block and biochemical tool for advanced research and pharmaceutical development. It is primarily utilized by researchers and manufacturers in the fields of medicinal chemistry, peptide synthesis, and as a precursor for enzyme inhibitors or targeted drug conjugates.

Application

• Pharmaceutical Intermediate: Serves as a key chiral synthon in the research and development of novel therapeutic agents, particularly enzyme inhibitors.
• Peptide Chemistry: Used in the synthesis of modified peptides and peptidomimetics to study structure-activity relationships or enhance metabolic stability.
• Biochemical Research: Acts as a substrate analog or inhibitor in enzymatic studies, especially for cysteine proteases or transferases.
• Ligand for Metal Chelation: The pyridyl and thiol groups provide potential binding sites for metal ions, useful in catalysis or imaging agent development.
• Reference Standard: Employed as a high-purity analytical standard for quality control and method validation in analytical laboratories.

Basic Information

Product Name	S-[2-(4-Pyridyl)Ethyl]-L-Cysteine
CAS No.	28809-04-3
Molecular Formula	C10H14N2O2S
Molecular Weight	226.30 g/mol
Synonyms	L-Cysteine, S-[2-(4-pyridinyl)ethyl]-; (R)-2-Amino-3-((2-(pyridin-4-yl)ethyl)thio)propanoic acid; 4-Pyridineethanethiol, S-substituted with L-cysteine; S-(2-Pyrid-4-ylethyl)-L-cysteine; S-2-(4-Pyridyl)ethyl-L-cysteine; S-2-(4-Pyridinyl)ethyl-L-cysteine; S-(4-Pyridylethyl)-L-cysteine; S-(2-(4-Pyridyl)ethyl)cysteine
EINECS	Contact for details

Quality Control

Our S-[2-(4-Pyridyl)Ethyl]-L-Cysteine is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, chiral analysis, and identity confirmation (IR, NMR) to ensure it meets rigorous research-grade specifications. A detailed Certificate of Analysis (COA) is provided with every shipment to guarantee traceability and compliance with your project requirements.

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 compound is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent degradation. For long-term storage, consider desiccated conditions.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Chiral Purity	≥ 99.0% (L-isomer)
Water Content (KF)	≤ 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.