Description

Eicosanoic-D39 Acid CAS NO 39756-32-6 is a high-purity, deuterium-labeled analog of arachidic acid, a saturated long-chain fatty acid. This stable isotope-labeled compound is essential for advanced analytical and research applications where precise molecular tracking is required. It is primarily utilized by researchers and quality control laboratories in the pharmaceutical, metabolic, and biochemical sectors for use as an internal standard in mass spectrometry and NMR spectroscopy.

Application

• Internal Standard for Mass Spectrometry (MS): Provides a reliable reference for the accurate quantification of endogenous arachidic acid and related fatty acids in complex biological matrices like plasma, serum, and tissue samples.
• Metabolic Pathway Tracing: Used in stable isotope labeling studies to investigate lipid metabolism, fatty acid oxidation, and biosynthetic pathways in vivo and in vitro.
• Nuclear Magnetic Resonance (NMR) Spectroscopy: Serves as a valuable probe in structural and dynamic studies due to the distinct signal of deuterium atoms, aiding in the analysis of lipid assemblies and membrane dynamics.
• Pharmaceutical Research & Development: Critical for pharmacokinetic (PK) and pharmacodynamic (PD) studies of lipid-based drug formulations, enabling precise measurement of drug absorption and distribution.
• Clinical Diagnostics: Employed in the development and validation of diagnostic assays for metabolic disorders related to fatty acid metabolism.
• Food & Nutrition Science: Used in research to trace and quantify fatty acids in food products and to study human nutritional uptake and metabolism.
• Environmental Analysis: Can be applied as a standard in the analysis of lipids and organic compounds in environmental samples.

Basic Information

Product Name	Eicosanoic-D39 Acid
CAS No.	39756-32-6
Molecular Formula	C20D39HO2
Molecular Weight	327.68 g/mol (theoretical)
Synonyms	Deuterated Arachidic Acid; Arachidic Acid-d39; Eicosanoic-d39 Acid; n-Eicosanoic-d39 Acid; Icosanoic-d39 Acid; Docosanoic-d39 Acid (common misnomer); [D39]-Arachidic Acid; Perdeuterated Arachidic Acid
EINECS	Contact for details

Quality Control

Our Eicosanoic-D39 Acid is manufactured under strict quality systems to ensure the high isotopic and chemical purity required for sensitive analytical applications. Each batch is supported by a comprehensive Certificate of Analysis (COA) detailing key parameters such as isotopic purity (Atom % D), chemical purity (by GC or HPLC), and identity confirmation. We adhere to relevant industry standards for stable isotope-labeled compounds, and custom purity grades are available to meet specific research protocols.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) or as indicated on the product label or CoA. For long-term storage, consider storage at -20°C under an inert atmosphere to maximize stability. Keep the container in a dry, well-ventilated place.

Specification

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

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