Description

Sodium Chloride (37Cl) is a stable isotope-labeled form of common salt, distinguished by the enrichment of the chlorine-37 isotope. This high-purity material is essential for advanced analytical and research applications where precise molecular tracing is required. It is a critical reagent for scientists and quality control professionals in pharmaceutical development, metabolic research, and environmental analysis who require isotopically pure standards for accurate mass spectrometry and NMR studies.

Application

• Internal Standard for Quantitative Analysis: Used as a precise reference standard in Liquid Chromatography-Mass Spectrometry (LC-MS) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) for pharmaceutical and bioanalytical assays.
• Metabolic Pathway Tracing: Serves as a tracer in clinical and pre-clinical research to study electrolyte balance, ion transport mechanisms, and related physiological processes.
• NMR Spectroscopy: Employed as a chemical shift reference or for preparing samples in deuterated solvents for nuclear magnetic resonance studies.
• Pharmaceutical R&D: Utilized in the development and validation of analytical methods for drug substances and products requiring isotope dilution techniques.
• Environmental Science: Applied in isotopic labeling studies to track chloride ion movement and behavior in ecological and geological systems.
• Manufacturing of Labeled Compounds: Acts as a starting material for the synthesis of more complex chlorine-37 labeled organic molecules for research purposes.

Basic Information

Product Name	Sodium Chloride (37Cl)
CAS No.	20510-56-9
Molecular Formula	Na37Cl
Molecular Weight	59.45 g/mol (for 37Cl isotope)
Synonyms	Sodium-37Chloride; NaCl-37Cl; Sodium Chloride-37Cl; Chloride-37 Sodium Salt; 37Cl-Labeled Sodium Chloride; Salt-37Cl; Stable Isotope Labeled NaCl; Common Salt-37Cl
EINECS	Contact for details

Quality Control

Our Sodium Chloride (37Cl) is manufactured under strict quality management systems to ensure exceptional isotopic and chemical purity, meeting the exacting standards of analytical and research laboratories. Each batch is supported by a comprehensive Certificate of Analysis (COA) detailing isotopic enrichment (Atom % 37Cl), chemical purity, and analytical results from techniques such as ICP-MS and titration. We adhere to relevant guidelines for the production of stable isotope-labeled materials to ensure reliable and reproducible performance in sensitive applications.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a dry environment. This material is hygroscopic (moisture-sensitive); ensure the container is sealed after each use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 99.0%
Isotopic Enrichment (Atom % 37Cl)	≥ 98.0%
pH (5% solution)	5.0 - 8.0
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 10 ppm

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