Description

Dl-Cysteine, S-Benzyl (1-13C) is a stable, isotopically labeled derivative of the amino acid cysteine, where the carbon at position 1 is the carbon-13 isotope. This compound is a crucial building block in advanced research, enabling precise metabolic pathway tracing and structural elucidation in complex biochemical systems. It is primarily utilized by pharmaceutical researchers, analytical chemists, and academic institutions engaged in proteomics, metabolomics, and the development of novel diagnostic agents.

Application

• Isotopic Tracer in Metabolic Studies: Used to track the incorporation and fate of cysteine in protein synthesis and glutathione metabolism pathways.
• Internal Standard for Mass Spectrometry: Serves as a critical quantitative reference standard in LC-MS and GC-MS analysis for accurate measurement of cysteine and related compounds in biological samples.
• Pharmaceutical Research & Development: Employed in the synthesis of isotopically labeled drug candidates for pharmacokinetic (ADME) studies and biomarker discovery.
• Proteomics and Peptide Synthesis: Acts as a protected, labeled precursor for the solid-phase synthesis of peptides for nuclear magnetic resonance (NMR) spectroscopy and other structural biology techniques.
• Nutritional Science Research: Facilitates studies on sulfur amino acid metabolism, bioavailability, and turnover in vivo.

Basic Information

Product Name	Dl-Cysteine, S-Benzyl (1-13C)
CAS No.	77284-35-6
Molecular Formula	C10H13NO2S * (¹³C)
Molecular Weight	212.28 g/mol (approx., for ¹³C labeled form)
Synonyms	DL-S-Benzylcysteine-1-13C; (RS)-S-Benzylcysteine-1-13C; (Rac)-S-Benzylcysteine-1-13C; 2-Amino-3-(benzylthio)propanoic acid-1-13C; 3-(Benzylthio)-DL-alanine-1-13C; H-Cys(Bzl)-OH-1-13C; NSC 83265-1-13C
EINECS	Contact for details

Quality Control

Our Dl-Cysteine, S-Benzyl (1-13C) is manufactured under strict quality protocols to ensure high isotopic and chemical purity, essential for sensitive research applications. Each batch is accompanied by comprehensive analytical data, including NMR for isotopic enrichment verification and HPLC for chemical purity. Certificates of Analysis (COA) detailing batch-specific results are provided and can be tailored to meet specific research or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C for long-term stability. This material is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Isotopic Enrichment (¹³C NMR)	≥ 99 atom % ¹³C
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.