Description

4-Ethoxyphenylphosphonic Acid is a specialized organophosphorus compound that serves as a versatile synthetic intermediate. Its value lies in its bifunctional structure, featuring both a phosphonic acid group and an ethoxy-substituted aromatic ring, enabling precise chemical modifications. This compound is primarily needed by researchers and manufacturers in the pharmaceutical, agrochemical, and material science industries for developing advanced molecules and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for compounds targeting bone metabolism or requiring phosphonate functionality.
• Agrochemical Synthesis: Used in the production of herbicides, plant growth regulators, and other crop protection agents where the phosphonic acid moiety is essential for activity.
• Ligand and Catalyst Preparation: Serves as a precursor for phosphonate-based ligands used in homogeneous catalysis and metal-organic frameworks (MOFs).
• Material Science: Employed in the surface modification of metals and oxides, and as a monomer or additive for flame-retardant or specialty polymers.
• Chemical Research: A valuable reagent in organic synthesis for introducing the 4-ethoxyphenylphosphonate group into target molecules.

Basic Information

Product Name	4-Ethoxyphenylphosphonic Acid
CAS No.	69387-02-6
Molecular Formula	C8H11O4P
Molecular Weight	202.14 g/mol
Synonyms	(4-Ethoxyphenyl)phosphonic Acid; p-Ethoxyphenylphosphonic Acid; 4-Ethoxybenzenephosphonic Acid; Phosphonic acid, P-(4-ethoxyphenyl)-; 69387-02-6; 4-Ethoxy-phenylphosphonic acid
EINECS	Contact for details

Quality Control

Our 4-Ethoxyphenylphosphonic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. Certificates of Analysis (COA) with detailed specifications are available upon request.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to exclude moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 2.0%

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