Description

7-Doxyl-Stearic Acid is a nitroxide spin-labeled derivative of stearic acid, widely utilized as a spin probe in electron paramagnetic resonance (EPR) spectroscopy. This compound is critical for studying membrane fluidity, protein-lipid interactions, and molecular dynamics within biological and model lipid bilayer systems. It is an essential research tool for biophysicists, pharmaceutical scientists, and material chemists working in advanced R&D.

Application

• As a spin probe in Electron Paramagnetic Resonance (EPR) spectroscopy for membrane biophysics research.
• Investigation of lipid bilayer fluidity and phase transitions in model and biological membranes.
• Studying protein-lipid interactions and the localization of membrane-associated proteins.
• Analysis of molecular order and dynamics within surfactant and polymer systems.
• Use in oxidative stress studies as a nitroxide radical probe.
• Research applications in drug delivery systems to characterize liposome and micelle properties.
• Tool for material science in the characterization of soft matter and nanocomposites.

Basic Information

Product Name	7-Doxyl-Stearic Acid
CAS No.	40951-82-4
Molecular Formula	C25H48NO4
Molecular Weight	426.66 g/mol
Synonyms	7-Doxyl Stearic Acid; 7-DOXYL Stearic Acid; 2-(3-Carboxypropyl)-4,4-dimethyl-2-tridecyl-3-oxazolidinyloxy; 7-Doxyl Heptadecanoic Acid; 7-NS; 7-DOXYL; 7-Doxyl Labeled Stearic Acid; EPR Probe 7-NS
EINECS	Contact for details

Quality Control

Our 7-Doxyl-Stearic Acid is produced under a rigorous quality management system. Each batch is characterized and tested to ensure high purity and performance consistency for sensitive research applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and spectral data is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C for long-term stability. Allow the product to equilibrate to room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	Yellow to orange waxy solid or powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95%
Assay (EPR)	Active radical content ≥ 90%
Melting Point	Contact for details
Solubility	Soluble in ethanol, DMSO, chloroform

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