Description

Octadecanoic--D7 Acid is a deuterium-labeled analog of stearic 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 research, and analytical chemistry sectors.

Application

• Internal Standard for Mass Spectrometry (MS): Serves as a critical quantitative reference standard in GC-MS and LC-MS analyses for accurate measurement of stearic acid and related lipids.
• Metabolic Pathway Tracing: Used in deuterium-labeling studies to investigate lipid metabolism, absorption, and biochemical pathways in vivo and in vitro.
• Pharmaceutical Research & Development: Employed in the development and validation of analytical methods for drug substances and excipients containing fatty acid components.
• Nutraceutical & Food Science Analysis: Acts as a standard for the precise quantification of stearic acid content in complex food matrices, supplements, and edible oils.
• Biomarker Discovery: Facilitates lipidomic profiling in clinical research to identify and validate disease biomarkers.
• Chemical Synthesis Intermediate: Used in the synthesis of other deuterium-labeled compounds for specialized research applications.

Basic Information

Item	Detail
Product Name	Octadecanoic--D7 Acid
CAS No.	951209-59-9
Molecular Formula	C18D7H29O2
Molecular Weight	289.50 g/mol (approx.)
Synonyms	Stearic Acid-d7; Octadecanoic Acid-d7; Deuterated Stearic Acid; n-Octadecanoic-d7 Acid; Heptadeuteriostearic Acid; C18:0-d7; Fatty Acid 18:0-d7; (D7)Stearic Acid
EINECS	Contact for details

Quality Control

Our Octadecanoic--D7 Acid is manufactured under strict quality control protocols to ensure high chemical purity and isotopic enrichment suitable for sensitive analytical applications. Each batch is supported by a comprehensive Certificate of Analysis (COA) detailing key parameters such as chemical purity (by GC or HPLC), isotopic purity (by MS), and residual solvent content. We adhere to relevant industry standards for high-purity reference materials.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). Keep the container tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (HPLC/GC)	≥ 98.0% (chemical purity)
Isotopic Purity	≥ 98 atom % D
Deuterium Content	≥ 7 atoms D per molecule
Melting Point	Contact for details

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