Description

1,3-Dioxane, 2-Ethynyl-5,5-Dimethyl- (9Ci) is a specialized heterocyclic compound featuring a reactive ethynyl group, making it a valuable building block in advanced organic synthesis. Its unique structure is critical for constructing complex molecular architectures, particularly in the development of novel polymers and fine chemicals. This high-purity intermediate is essential for R&D and production in the pharmaceutical, agrochemical, and material science industries seeking to innovate with acetylenic chemistry.

Application

• Pharmaceutical Intermediate: Serves as a key synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for creating acetylenic-linked molecular scaffolds.
• Agrochemical Synthesis: Used in the production of advanced crop protection agents and herbicides where the ethynyl moiety imparts specific biological activity.
• Polymer & Material Science: Acts as a monomer or cross-linking agent in the synthesis of specialty polymers, resins, and advanced materials with tailored properties.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for cycloaddition reactions, click chemistry, and the construction of complex heterocycles.
• Ligand & Catalyst Development: Utilized in the preparation of novel ligands and organometallic catalysts for asymmetric synthesis and other catalytic processes.
• Fine Chemical Production: Integral to the manufacture of high-value specialty chemicals used in electronics, coatings, and other performance-driven applications.

Basic Information

Product Name	1,3-Dioxane, 2-Ethynyl-5,5-Dimethyl- (9Ci)
CAS No.	136831-03-3
Molecular Formula	C8H12O2
Molecular Weight	140.18 g/mol
Synonyms	2-Ethynyl-5,5-dimethyl-1,3-dioxane; 5,5-Dimethyl-2-ethynyl-1,3-dioxane; 2-Ethynyl-5,5-dimethyl-m-dioxane; Acetylenic Dioxane Derivative; Ethynyl Dimethyl Dioxane; 136831-03-3; (2-Ethynyl-5,5-dimethyl-1,3-dioxane)
EINECS	Contact for details

Quality Control

Our 1,3-Dioxane, 2-Ethynyl-5,5-Dimethyl- (9Ci) is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and FTIR, to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with every shipment, confirming compliance with agreed specifications. Our quality commitment supports applications requiring high-purity intermediates under cGMP or ISO 9001 frameworks.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C/59-77°F). Due to its sensitivity to light and propensity for oxidation, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat, sparks, open flames, and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
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.