Description

Phosphonic Acid, (2-Ethyl-1-Cyclobuten-1-Yl)-, Diethyl Ester (9Ci) is a specialized organophosphorus compound that serves as a valuable synthetic intermediate and ligand precursor. This chemical matters for its unique structural features, offering a reactive cyclobutene ring and a phosphonate ester group, which are crucial for constructing complex molecules in advanced research and development. Industrial and academic researchers in the fields of pharmaceutical chemistry, agrochemical synthesis, and materials science will find this compound essential for developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Used in the synthesis of novel drug candidates, particularly those targeting specific enzyme pathways where the phosphonate moiety is critical.
• Agrochemical Research: Serves as a key building block for developing new herbicides, fungicides, or plant growth regulators with enhanced activity.
• Ligand Synthesis: Acts as a precursor for creating specialized phosphonate-based ligands used in catalysis and metal-organic frameworks (MOFs).
• Polymer Modification: Employed to introduce phosphonate functional groups into polymers, altering properties like flame retardancy or metal adhesion.
• Chemical Synthesis: Utilized in organic synthesis for cyclobutane ring-opening reactions or as a protected phosphonic acid equivalent.
• Material Science: Investigated for creating surface modifiers or additives that impart specific chemical functionalities to materials.

Basic Information

Product Name	Phosphonic Acid, (2-Ethyl-1-Cyclobuten-1-Yl)-, Diethyl Ester (9Ci)
CAS No.	500545-58-4
Molecular Formula	C10H19O3P
Molecular Weight	218.23 g/mol
Synonyms	Diethyl (2-Ethyl-1-cyclobuten-1-yl)phosphonate; (2-Ethyl-1-Cyclobuten-1-Yl)phosphonic Acid Diethyl Ester; Diethyl 2-Ethyl-1-cyclobuten-1-ylphosphonate; 2-Ethyl-1-cyclobuten-1-ylphosphonic Acid Diethyl Ester; Phosphonic Acid, P-(2-Ethyl-1-cyclobuten-1-yl)-, Diethyl Ester
EINECS	Contact for details

Quality Control

Our production of Phosphonic Acid, (2-Ethyl-1-Cyclobuten-1-Yl)-, Diethyl Ester adheres to stringent internal quality standards to ensure batch-to-batch consistency and purity for research and industrial use. Each lot undergoes comprehensive analytical testing, including chromatographic and spectroscopic methods. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

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 such as strong oxidizing agents. The container should be kept tightly sealed to prevent moisture absorption and potential decomposition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 5.0%

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