Description

9-Doxylstearate is a nitroxide spin label compound, specifically a stearic acid derivative bearing a stable doxyl radical at the 9-position. This compound is a critical tool in Electron Paramagnetic Resonance (EPR) spectroscopy for probing the dynamics and structure of lipid membranes and proteins. It is primarily utilized by researchers and scientists in the fields of biophysics, structural biology, and materials science to study molecular motion, membrane fluidity, and protein-lipid interactions.

Application

• Membrane Biophysics Research: As a spin probe to study lipid bilayer dynamics, phase transitions, and membrane fluidity.
• Protein-Lipid Interaction Studies: To investigate the binding and interaction of proteins with lipid membranes using site-directed spin labeling (SDSL) techniques.
• EPR Spectroscopy: A fundamental reagent for Electron Paramagnetic Resonance experiments to measure rotational correlation times and order parameters.
• Model Membrane Systems: Incorporation into liposomes, micelles, and other model membrane systems for controlled biophysical studies.
• Oxidative Stress Studies: Used as a spin trap or probe in research related to free radicals and oxidative processes in biological systems.
• Polymer & Material Science: Application in studying molecular mobility and microstructure in polymers and soft materials.

Basic Information

Product Name	9-Doxylstearate
CAS No.	50613-97-3
Molecular Formula	C26H50NO4
Molecular Weight	440.68 g/mol
Synonyms	9-DOXYL Stearic Acid; 2-(9-Carboxyoctadecyl)-2-ethyl-4,4-dimethyl-3-oxazolidinyloxy; 9-DOXYL Stearate; 9-Doxyl stearic acid; 9-(4',4'-Dimethyl-3'-oxazolidinyloxy)stearic acid; 9-NS; Stearic acid, 9-(4,4-dimethyl-3-oxazolidinyloxy)-; EPR Spin Label 9-DOXYL.
EINECS	Contact for details

Quality Control

Our 9-Doxylstearate is produced under stringent conditions to ensure high purity and batch-to-batch consistency, essential for reliable research data. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and other critical parameters. We adhere to rigorous internal quality standards to meet the exacting requirements of the research and analytical communities.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). For long-term stability, consider storage under an inert atmosphere such as argon or nitrogen to minimize potential degradation of the nitroxide radical.

Specification

Item	Specification
Appearance	White to off-white powder or crystals
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95%
EPR Signal	Characteristic triplet spectrum
Melting Point	Contact for details
Solubility	Soluble in organic solvents (e.g., chloroform, ethanol)

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