Description

Octadecanoic Acid-13C18 is a uniformly carbon-13 labeled isotopologue of stearic acid, a fundamental saturated fatty acid. This stable isotope-labeled compound is essential for advanced analytical and metabolic research, providing a non-radioactive tracer for precise quantification and pathway elucidation. It is a critical material for researchers and manufacturers in the pharmaceutical, nutritional science, and biochemistry sectors who require high-purity internal standards for mass spectrometry and NMR studies.

Application

• Internal Standard for Quantitative Analysis: Used as a certified reference material in GC-MS and LC-MS for the accurate quantification of stearic acid and related lipids in complex biological matrices.
• Metabolic Pathway Tracing: Serves as a stable isotope tracer in in vivo and in vitro studies to investigate fatty acid metabolism, absorption, and β-oxidation.
• Pharmaceutical Research: Employed in drug metabolism and pharmacokinetics (DMPK) studies to track the fate of lipid-based drug formulations and excipients.
• Nutritional Science: Applied in research on lipid digestion, bioavailability, and the metabolic effects of dietary fats.
• Biochemical Synthesis: Acts as a labeled precursor for the synthesis of more complex isotope-labeled compounds, such as phospholipids or triglycerides, for specialized research applications.
• Quality Control: Utilized in analytical laboratories to validate methods and ensure the accuracy of lipid profiling assays.

Basic Information

Product Name	Octadecanoic Acid-13C18
CAS No.	287100-83-8
Molecular Formula	¹³C₁₈H₃₆O₂
Molecular Weight	~308.5 g/mol
Synonyms	Stearic Acid-13C18; [13C18]-Stearic Acid; 13C Labeled Stearic Acid; Isotopic Stearic Acid; n-Octadecanoic Acid-13C18; 13C18 Stearic Acid; 1-Heptadecanecarboxylic Acid-13C18; Fatty Acid 18:0-13C18
EINECS	Contact for details

Quality Control

Our Octadecanoic Acid-13C18 is manufactured under strict quality systems to ensure exceptional isotopic and chemical purity, critical for sensitive analytical applications. Each batch is supported by a comprehensive Certificate of Analysis (COA) detailing isotopic enrichment (typically >99 atom % 13C), chemical purity (by HPLC), and identity confirmation. We adhere to cGMP principles for consistent production, and our quality protocols are designed to meet the stringent requirements of research and regulatory laboratories.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C. The product is hygroscopic (moisture-sensitive) and should be handled under anhydrous conditions to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Isotopic Enrichment	≥ 99 atom % 13C
Chemical Purity (HPLC)	≥ 98.0%
Melting Point	67 - 71 °C
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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