Description

14-Doxylstearic Acid is a nitroxide spin-labeled derivative of stearic acid, widely used as a stable free radical probe in electron paramagnetic resonance (EPR) spectroscopy. This compound is essential for studying molecular dynamics, membrane fluidity, and protein-lipid interactions in biophysical and biochemical research. It is a critical tool for researchers and quality control laboratories in the pharmaceutical, biotechnology, and advanced materials sectors.

Application

• As a spin label in Electron Paramagnetic Resonance (EPR) spectroscopy for probing membrane structure and dynamics.
• Research on lipid bilayer fluidity and phase transitions in model and biological membranes.
• Investigation of protein-lipid interactions and membrane protein conformation.
• Study of antioxidant activity and free radical processes in chemical and biological systems.
• Use as a molecular probe in polymer science and materials research to analyze molecular mobility.
• Tool in diagnostic assay development and biophysical characterization within pharmaceutical R&D.

Basic Information

Product Name	14-Doxylstearic Acid
CAS No.	50614-00-1
Molecular Formula	C24H46NO4
Molecular Weight	412.63 g/mol
Synonyms	2-(14-Carboxytetradecyl)-2-ethyl-4,4-dimethyl-3-oxazolidinyloxy; 14-DOXYL-stearic acid; 14-DSA; 14-NS; 14-Nitroxide stearate; 14-SASL; 14-(4,4-Dimethyl-3-oxazolidinyloxy)stearic acid; EPR Probe 14-DOXYL
EINECS	Contact for details

Quality Control

Our 14-Doxylstearic Acid is produced and tested under strict quality management protocols to ensure high purity and batch-to-batch consistency, suitable for sensitive research applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and other critical parameters. We adhere to relevant industry standards for research-grade chemicals.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white powder or crystals
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
EPR Signal	Characteristic triplet spectrum
Residue on Ignition	< 0.5%

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