Description

n-Heneicosane-D44 is a high-purity, fully deuterated linear alkane standard, specifically the perdeuterated form of heneicosane (C21H44). This compound is essential for advanced analytical and research applications where isotopic labeling is required to eliminate spectral interference or to act as an internal standard. It is primarily utilized by analytical laboratories, research institutions, and specialty chemical manufacturers working in nuclear magnetic resonance (NMR) spectroscopy, mass spectrometry, and deuterium chemistry.

Application

• NMR Spectroscopy Solvent & Standard: Used as a deuterated solvent or chemical shift reference standard in 1H, 13C, and 2H NMR due to its high isotopic purity and chemical inertness.
• Mass Spectrometry Internal Standard: Serves as a critical internal standard for quantitative GC-MS and LC-MS analysis of hydrocarbons and lipids, leveraging its distinct mass signature.
• Deuterium Labeling Studies: Acts as a precursor or model compound in reaction mechanisms and kinetic studies where tracking deuterium atoms is necessary.
• Polymer & Material Science Research: Employed in the study of polymer dynamics, phase behavior, and as a probe in small-angle neutron scattering (SANS) experiments.
• Calibration & Reference Material: Provides a high-purity calibration point for chromatographic systems (GC, HPLC) and other analytical instrumentation.
• Specialty Chemical Synthesis: Used in the synthesis of other deuterated compounds for pharmaceutical, agrochemical, and advanced material research.

Basic Information

Product Name	n-Heneicosane-D44
CAS No.	39756-37-1
Molecular Formula	C21D44
Molecular Weight	320.80 g/mol
Synonyms	Heneicosane-d44; Perdeuteroheneicosane; n-Heneicosane-d44; Deuterated Heneicosane; C21D44; Docosane-d46 (common mis-association); Isotopic Standard C21; Alkane-d44 Standard
EINECS	Contact for details

Quality Control

Every batch of n-Heneicosane-D44 is produced and tested under strict quality management protocols to ensure exceptional isotopic and chemical purity, critical for sensitive analytical applications. Our standard quality commitment includes verification of deuterium enrichment (>98 atom % D typically) and chemical purity by advanced chromatographic and spectroscopic methods. A comprehensive Certificate of Analysis (COA) detailing isotopic purity, assay, and identification is provided with each shipment.

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 away from heat and open flame. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	White crystalline solid or waxy solid
Identification (IR / NMR)	Conforms to structure
Deuterium Enrichment (NMR / MS)	≥98 atom % D
Assay (GC)	≥99.0% (chemical purity)
Melting Point	39 - 41 °C

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