Description

Ethynyl-D-Benzene is a deuterated aromatic compound where a hydrogen atom on the benzene ring is replaced by a deuterium-labeled ethynyl group. This specialized chemical is valued for its role as a stable isotope-labeled building block, providing critical utility in research and development where precise molecular tracking is required. It is primarily sought after by professionals in the pharmaceutical, agrochemical, and advanced materials sectors for applications in synthesis, analytical method development, and mechanistic studies.

Application

• As a deuterated internal standard in quantitative mass spectrometry (LC-MS, GC-MS) for accurate bioanalytical measurements.
• A key labeled synthetic intermediate in the development of novel Active Pharmaceutical Ingredients (APIs) and agrochemicals for metabolic and pharmacokinetic studies.
• In materials science research, particularly for investigating reaction mechanisms and polymer properties using spectroscopic techniques like NMR.
• For academic and industrial R&D in organic chemistry, facilitating studies on reaction pathways and isotope effects.

Basic Information

Product Name	Ethynyl-D-Benzene
CAS No.	3240-11-7
Molecular Formula	C8H5D
Molecular Weight	105.14 g/mol
Synonyms	1-Ethynyl-2,3,4,5,6-pentadeuteriobenzene; (2,3,4,5,6-Pentadeuteriophenyl)acetylene; Deuterated Phenylacetylene; Ethynylbenzene-d5; Phenylacetylene-d5; Benzene-d5, ethynyl-; 1-Ethynylbenzene-d5
EINECS	Contact for details

Quality Control

Every batch of Ethynyl-D-Benzene is produced and tested under a strict quality management system. We provide comprehensive analytical data to ensure the product meets the high-purity requirements for research and synthesis. A detailed Certificate of Analysis (COA), including isotopic purity and chemical purity assays, is available for each lot upon request.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly volatile nature, store in a cool, well-ventilated place at room temperature (15-25°C). Keep the container tightly sealed when not in use to prevent evaporation and potential contamination.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0% (Chemical Purity)
Isotopic Purity (Deuterium Content)	≥ 98 atom % D
Water Content (KF)	≤ 0.5%

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