Description

Diethyl 2-Butenylphosphonate is a high-purity organophosphorus compound, specifically a phosphonate ester, serving as a versatile building block in advanced organic synthesis. Its primary value lies in its role as a key reagent in the Horner-Wadsworth-Emmons (HWE) olefination reaction, enabling the efficient and stereoselective synthesis of complex alkenes and conjugated systems. This product is essential for R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries who require reliable, high-quality intermediates for constructing carbon-carbon double bonds.

Application

• Pharmaceutical Intermediate Synthesis: A critical reagent in the Horner-Wadsworth-Emmons reaction for constructing key alkene segments in active pharmaceutical ingredients (APIs).
• Agrochemical Production: Used in the synthesis of complex organic molecules for novel herbicides, insecticides, and plant growth regulators.
• Material Science & Polymer Chemistry: Employed in the creation of functional monomers, ligands for catalysts, and precursors for phosphorus-containing polymers.
• Fine Chemical & Flavor/Fragrance Synthesis: Facilitates the production of specific alkenes and conjugated dienes used in specialty aroma chemicals and flavors.
• Academic & Industrial R&D: A valuable tool for methodological development and the synthesis of novel organic compounds in research laboratories.

Basic Information

Item	Detail
Product Name	Diethyl 2-Butenylphosphonate
CAS No.	682-34-8
Molecular Formula	C8H17O3P
Molecular Weight	192.19 g/mol
Synonyms	Diethyl (2-Butenyl)phosphonate; (2-Butenyl)phosphonic Acid Diethyl Ester; Diethyl 2-Buten-1-ylphosphonate; Diethyl (But-2-en-1-yl)phosphonate; 2-Butenylphosphonic Acid Diethyl Ester; Phosphonic Acid, (2-Butenyl)-, Diethyl Ester; But-2-ene-1-phosphonic Acid Diethyl Ester
EINECS	211-673-5

Quality Control

Our Diethyl 2-Butenylphosphonate is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high chemical purity. Each lot is analyzed to confirm identity, potency, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing specifications such as assay (by GC or NMR), water content, and related substances is provided with every shipment to support your quality assurance and regulatory needs.

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 strong bases and incompatible materials. For long-term storage, consider maintaining under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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