Description

S-Sulfo-Dl-Cysteine-2,3,3-D3 is a deuterium-labeled derivative of S-sulfocysteine, a key sulfur-containing amino acid analog. This compound is specifically designed for use as an internal standard in quantitative mass spectrometry, providing enhanced accuracy and reliability in analytical measurements. It is an essential tool for researchers and quality control laboratories in the pharmaceutical, biotechnology, and advanced life science sectors who require precise quantification of sulfur amino acid metabolites.

Application

• Internal Standard for LC-MS/MS: Primary application as a stable isotope-labeled internal standard for the precise quantification of S-sulfocysteine and related metabolites in complex biological matrices.
• Biomedical Research: Used in studies investigating sulfur amino acid metabolism, oxidative stress pathways, and disorders related to cysteine metabolism.
• Pharmaceutical Development: Critical for pharmacokinetic (PK) and pharmacodynamic (PD) studies of drug candidates that interact with sulfur metabolic pathways.
• Diagnostic Assay Development: Employed in the development and validation of clinical diagnostic tests for inborn errors of metabolism, such as sulfite oxidase deficiency.
• Metabolomics & Biomarker Discovery: Facilitates accurate profiling of sulfur-containing metabolites in high-throughput metabolomic screens for disease biomarker identification.
• Quality Control & Reference Material: Serves as a certified reference material (CRM) for calibrating analytical instruments and ensuring data integrity in regulated environments.

Basic Information

Product Name	S-Sulfo-Dl-Cysteine-2,3,3-D3
CAS No.	4371-53-3
Molecular Formula	C3H4D3NO5S2
Molecular Weight	200.24 g/mol
Synonyms	DL-S-Sulfocysteine-2,3,3-d3; (R,S)-3-Sulfo-2-aminopropanoic acid-2,3,3-d3; S-Sulfocysteine-d3; Deuterated S-sulfocysteine; 2-Amino-3-sulfopropanoic acid-d3; 3-Sulfino-L-alanine-d3; Isotope-labeled S-sulfocysteine
EINECS	Contact for details

Quality Control

Our S-Sulfo-Dl-Cysteine-2,3,3-D3 is manufactured under strict quality systems to ensure the high isotopic purity and chemical integrity required for analytical applications. Each batch is supported by a comprehensive Certificate of Analysis (COA) detailing parameters such as isotopic enrichment (D, atom %), chemical purity (by HPLC), and identity confirmation (by NMR and MS). We adhere to ISO 9001 quality management principles, and our processes are designed to meet the exacting standards of pharmaceutical and research customers globally.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below in a dry, cool place. This product is hygroscopic (moisture-sensitive). For long-term storage under inert atmosphere, it is recommended to seal under argon or nitrogen. Allow the vial to equilibrate to room temperature before opening to minimize moisture uptake.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 95%
Isotopic Purity (MS)	≥ 98 atom % D
Water Content (KF)	≤ 2.0%
Residual Solvents (GC)	Complies with ICH guidelines

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