Description

Octadecanoic-D35 Acid is a deuterium-labeled analog of stearic acid, where 35 hydrogen atoms are replaced with the stable isotope deuterium. This high isotopic purity makes it an essential internal standard and tracer in quantitative mass spectrometry and metabolic research. It is a critical tool for analytical chemists and researchers in pharmaceutical development, environmental science, and lipid biochemistry who require precise quantification and pathway elucidation.

Application

• Quantitative Mass Spectrometry (MS): Serves as a stable isotope-labeled internal standard for the accurate quantification of stearic acid and related fatty acids in complex biological matrices.
• Metabolic Pathway Tracing: Used in in vitro and in vivo studies to track the absorption, distribution, metabolism, and excretion (ADME) of fatty acids.
• Pharmaceutical Research: Employed in drug metabolism and pharmacokinetics (DMPK) studies for lipid-based drug formulations.
• Lipidomics and Biomarker Discovery: Enables precise profiling of lipid species in clinical and nutritional research for disease biomarker identification.
• Environmental Analysis: Acts as a standard in the analysis of fatty acids and organic pollutants in environmental samples.
• NMR Spectroscopy: Useful as a deuterated agent in nuclear magnetic resonance studies to simplify spectral analysis.

Basic Information

Product Name	Octadecanoic-D35 Acid
CAS No.	17660-51-4
Molecular Formula	C18D35O2 or C18H3D35O2
Molecular Weight	~299.6 g/mol
Synonyms	Stearic Acid-d35; Octadecanoic-d35 Acid; Deuterated Stearic Acid; Perdeuterated Stearic Acid; Stearic-d35 Acid; n-Octadecanoic-d35 Acid; C18:0-d35; Fatty Acid 18:0-d35
EINECS	Contact for details

Quality Control

Our Octadecanoic-D35 Acid is produced under strict quality systems to ensure exceptional isotopic and chemical purity for research applications. Each batch is characterized by advanced analytical techniques including NMR, GC-MS, and HPLC to confirm deuterium incorporation and chemical identity. A comprehensive Certificate of Analysis (COA) detailing isotopic purity (atom % D), chemical purity, and analytical methods is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store at controlled room temperature (15-25°C) in a cool, dry, and well-ventilated area. For long-term stability, consider storage under an inert atmosphere such as argon or nitrogen.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR / NMR)	Conforms to structure
Isotopic Purity (Atom % D)	≥ 98%
Chemical Purity (HPLC / GC)	≥ 98%
Melting Point	Contact for details

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