Description

S-2-Nitrophenyl-L-Cysteine is a specialized chiral amino acid derivative featuring a nitro-substituted phenyl group. This compound is a critical building block in pharmaceutical research and development, particularly for the synthesis of complex molecules and active pharmaceutical ingredients (APIs). It is essential for researchers and manufacturers in the pharmaceutical, biotechnology, and fine chemical sectors who require high-purity, optically active intermediates for advanced synthesis.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and production of novel drug candidates and active pharmaceutical ingredients (APIs).
• Biochemical Research: Used in proteomics and enzyme studies as a modified cysteine analog to investigate protein structure and function.
• Peptide Synthesis: Serves as a protected or modified amino acid residue in the solid-phase and solution-phase synthesis of specialized peptides.
• Chemical Biology Probes: Employed in the development of activity-based probes and affinity labels for studying biological pathways.
• Catalyst Ligand Preparation: Acts as a precursor for chiral ligands used in asymmetric catalysis.
• Reference Standard: Utilized as a high-purity analytical standard for quality control and method development in analytical laboratories.

Basic Information

Product Name	S-2-Nitrophenyl-L-Cysteine
CAS No.	60115-45-9
Molecular Formula	C9H10N2O4S
Molecular Weight	242.25 g/mol
Synonyms	(R)-2-Amino-3-(2-nitrophenylthio)propanoic acid; L-Cysteine, S-(2-nitrophenyl)-; S-(2-Nitrophenyl)-L-cysteine; 2-Nitrophenyl-L-cysteine; (2R)-2-Amino-3-[(2-nitrophenyl)sulfanyl]propanoic acid; NSC 334365; 60115-45-9
EINECS	Contact for details

Quality Control

Our S-2-Nitrophenyl-L-Cysteine is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity verification by HPLC, to ensure it meets the high standards required for research and pharmaceutical applications. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming identity, purity, and specific impurity profiles.

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 material is light-sensitive and easily oxidized; for long-term storage, consider keeping under an inert atmosphere such as nitrogen or argon to maintain stability and purity.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Chiral Purity (HPLC)	≥ 99.0% ee (L-Isomer)
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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