Description

Dimethyldi(Octadecyl-D37)Ammonium Bromide is a deuterium-labeled quaternary ammonium salt, specifically designed for advanced research and analytical applications. This high-purity, isotopically enriched compound serves as a critical internal standard for mass spectrometry, enabling precise quantification and metabolic pathway tracing in complex biological and chemical matrices. It is essential for researchers and analytical scientists in pharmaceutical development, environmental analysis, and advanced material science who require uncompromising accuracy and traceability in their deuterium-labeling studies.

Application

• Mass Spectrometry Internal Standard: Primary use as a deuterium-labeled reference standard for the accurate quantification of cationic surfactants and related compounds via LC-MS/MS and GC-MS.
• Pharmaceutical Research: Tracing metabolic pathways, studying drug absorption and distribution, and validating analytical methods for quaternary ammonium-based active pharmaceutical ingredients (APIs).
• Environmental Analysis: Detection and quantification of trace levels of disinfectants, surfactants, and other quaternary ammonium compounds (QACs) in water, soil, and biological samples.
• Biochemical Studies: Investigating membrane interactions, protein binding, and the behavior of lipid-like molecules in deuterium-enriched environments for NMR and MS studies.
• Material Science: Research into surface modifications, self-assembled monolayers (SAMs), and the development of specialized coatings where isotopic labeling is required.
• Forensic and Regulatory Science: Method development and validation for compliance testing in consumer products, industrial formulations, and environmental monitoring.

Basic Information

Product Name	Dimethyldi(Octadecyl-D37)Ammonium Bromide
CAS No.	1111808-79-7
Molecular Formula	C38D76BrN
Molecular Weight	~667.9 g/mol (deuterated form)
Synonyms	Dimethyldistearyl-D37-ammonium bromide; Didodecyl-D37-dimethylammonium bromide; Didecyl-D37-dimethylammonium bromide (common naming variant); DODAB-D74; Deuterated DODAB; Octadecyl-D37-dimethylammonium bromide (isomeric form); N,N-Dimethyl-N,N-di(octadecyl-D37)ammonium bromide; Isotopic internal standard for QACs
EINECS	Contact for details

Quality Control

Every batch of Dimethyldi(Octadecyl-D37)Ammonium Bromide is manufactured and analyzed under strict quality management protocols to ensure isotopic purity, chemical purity, and batch-to-batch consistency for research applications. Our products undergo rigorous quality testing, including NMR and Mass Spectrometry, to confirm deuterium incorporation and chemical identity. Certificates of Analysis (COA) detailing isotopic enrichment (Atom % D), chemical purity, and analytical results are 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). This material is hygroscopic (moisture-sensitive); ensure the container is sealed under an inert atmosphere after each use to prevent degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (MS)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Isotopic Purity (Atom % D)	≥ 98.0%
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.