Description

L-Cysteine, n-(Hydroxyiminomethyl)- (9Ci) is a specialized derivative of the amino acid L-cysteine, featuring a hydroxyiminomethyl functional group. This modification is significant as it introduces a reactive oxime moiety, making the compound a valuable intermediate for synthesizing more complex molecules and chelating agents. It is primarily needed by research institutions and industrial R&D departments focused on pharmaceutical development, biochemical research, and the synthesis of novel peptide-based compounds.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those targeting enzyme inhibition or requiring metal chelation.
• Biochemical Research: Used as a precursor or modifying agent in peptide synthesis and protein engineering studies.
• Chelating Agent Synthesis: Serves as a starting material for creating specialized ligands designed to bind specific metal ions in catalytic or analytical applications.
• Reference Standard: Employed as an analytical standard in quality control laboratories for method development and verification in pharmaceutical analysis.

Basic Information

Item	Details
Product Name	L-Cysteine, n-(Hydroxyiminomethyl)- (9Ci)
CAS No.	173144-48-4
Molecular Formula	C4H8N2O3S
Molecular Weight	164.18 g/mol
Synonyms	N-(Hydroxyiminomethyl)-L-cysteine; L-Cysteine, N-(hydroxyiminomethyl)-; (2R)-2-Amino-3-[(hydroxyimino)methyl]sulfanylpropanoic acid; Cysteine oxime derivative; Amino acid oxime; Thioglycine oxime derivative
EINECS	Contact for details

Quality Control

Our L-Cysteine, n-(Hydroxyiminomethyl)- (9Ci) is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets high-purity research-grade standards. A Certificate of Analysis (COA) detailing all test results is provided with every shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (typically 15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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