Description

Proxyl-Mts CAS NO 201403-46-5 is a specialized chemical compound, a nitroxide spin label, valued for its stability and reactivity in advanced research and synthesis. This compound is critical for applications requiring precise molecular tagging and analysis, particularly in the study of biomolecular structures and dynamics. It is primarily needed by researchers and manufacturers in the pharmaceutical, biotechnological, and advanced materials sectors.

Application

• Spin Labeling in EPR Spectroscopy: Used as a stable radical probe for Electron Paramagnetic Resonance (EPR) studies to investigate protein structure, dynamics, and interactions.
• Site-Directed Spin Labeling (SDSL): Essential for covalent attachment to specific sites on proteins or nucleic acids to monitor conformational changes.
• Polymer & Materials Science: Acts as a radical trap or polymerization regulator in the development and analysis of advanced polymeric materials.
• Bioconjugation & Probe Synthesis: Serves as a key intermediate for creating labeled antibodies, peptides, or other biomolecules for diagnostic and imaging applications.
• Oxidation & Radical Chemistry Studies: Employed as a model compound or reagent in mechanistic studies of free radical reactions.
• Pharmaceutical Research: Utilized in drug discovery for probing drug-target interactions and studying membrane protein dynamics.

Basic Information

Item	Details
Product Name	Proxyl-Mts
CAS No.	201403-46-5
Molecular Formula	C13H24N2O3Si
Molecular Weight	284.43 g/mol
Synonyms	3-(Methylthio)propyl 2,2,5,5-tetramethyl-1-pyrrolidinyloxy free radical; 3-(Methylthio)propyl proxyl; MTS-SL; MTSL; (1-Oxyl-2,2,5,5-tetramethyl-3-pyrrolidinyl)methyl 3-(methylthio)propyl sulfone; S-(1-Oxyl-2,2,5,5-tetramethyl-3-pyrrolidinyl)methyl methanethiosulfonate; MTSSL; Proxyl methanethiosulfonate spin label
EINECS	Contact for details

Quality Control

Our Proxyl-Mts is produced under stringent conditions to ensure high purity and batch-to-batch consistency, suitable for sensitive research applications. Quality is verified through comprehensive analytical techniques including HPLC, NMR, and EPR spectroscopy. A Certificate of Analysis (COA) detailing purity, identity, and specific tests is provided with each batch to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). Keep the container sealed under an inert atmosphere if possible to maximize long-term stability. Handle and store away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Orange to red solid or oil
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95%
EPR Analysis	Confirms radical character
Water Content (KF)	≤ 0.5%

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