Description

Phosphonic Acid, Ethynyl-, Diethyl Ester is a specialized organophosphorus compound characterized by its unique ethynyl and diethyl ester functional groups. This structure makes it a valuable intermediate for synthesizing complex molecules, particularly in the pharmaceutical and agrochemical sectors. It is primarily sought by R&D chemists and process development teams for constructing novel active ingredients and advanced materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, especially those targeting bone diseases or requiring phosphonate-based bioisosteres.
• Agrochemical Synthesis: Used in the production of advanced herbicides, plant growth regulators, and fungicides with specific mode-of-action profiles.
• Ligand and Catalyst Precursor: Serves as a starting material for creating specialized phosphonate ligands used in homogeneous catalysis and metal complexation.
• Material Science Research: Employed in the development of flame retardants, corrosion inhibitors, and specialty polymers where the ethynyl group enables further cross-linking or functionalization.
• Chemical Synthesis: Versatile reagent for introducing the phosphonate moiety into organic molecules via further chemical transformations like hydrolysis or cross-coupling reactions.

Basic Information

Product Name	Phosphonic Acid, Ethynyl-, Diethyl Ester
CAS No.	4851-51-8
Molecular Formula	C6H11O3P
Molecular Weight	162.12 g/mol
Synonyms	Diethyl Ethynylphosphonate; Ethynylphosphonic Acid Diethyl Ester; Diethyl (Ethynyl)phosphonate; (Ethynyl)phosphonic Acid Diethyl Ester; Acetylenephosphonic Acid Diethyl Ester; Diethyl Acetylenephosphonate; Phosphonic Acid, Ethynyl-, Diethyl Ester; EINECS 225-459-8
EINECS	225-459-8

Quality Control

Our Phosphonic Acid, Ethynyl-, Diethyl Ester is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing including HPLC, GC, NMR, and IR spectroscopy to confirm identity and purity. We provide a detailed Certificate of Analysis (COA) with every shipment, ensuring traceability and compliance with your research or production specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is moisture-sensitive; keep container tightly sealed under an inert atmosphere such as nitrogen for long-term storage.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	1.4400 - 1.4450
Density (20°C)	1.080 - 1.100 g/mL

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