Description

Phosphonic Acid, (4-Ethoxyphenyl)-, Monomethyl Ester (9Ci) is a specialized organophosphorus compound with the CAS number 131066-54-1. This chemical serves as a versatile intermediate and building block in advanced organic synthesis, valued for its unique structural motif. It is primarily required by research and development laboratories, as well as production facilities in the pharmaceutical and agrochemical sectors, for creating novel active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel drug candidates, particularly those targeting bone metabolism or requiring phosphonate functional groups.
• Agrochemical Synthesis: Intermediate for developing next-generation herbicides, plant growth regulators, or fungicides with enhanced activity and selectivity.
• Ligand and Catalyst Development: Used in the preparation of specialized ligands for metal catalysis or in the development of organocatalysts for asymmetric synthesis.
• Material Science Research: Serves as a monomer or additive in the research of advanced polymers, flame retardants, or surface modification agents.
• Chemical Biology Probes: Utilized in the design and synthesis of molecular probes for studying enzymatic activity or cellular processes involving phosphate metabolism.

Basic Information

Product Name	Phosphonic Acid, (4-Ethoxyphenyl)-, Monomethyl Ester (9Ci)
CAS No.	131066-54-1
Molecular Formula	C9H13O4P
Molecular Weight	216.17 g/mol
Synonyms	(4-Ethoxyphenyl)methylphosphonic Acid Monomethyl Ester; Methyl (4-Ethoxyphenyl)methylphosphonate; Monomethyl (4-Ethoxyphenyl)phosphonate; 4-Ethoxybenzylphosphonic Acid Monomethyl Ester; Phosphonic Acid, P-[(4-Ethoxyphenyl)methyl]-, Monomethyl Ester; (4-Ethoxybenzyl)phosphonic Acid Methyl Ester; Methyl (4-Ethoxybenzyl)phosphonate
EINECS	Contact for details

Quality Control

Our Phosphonic Acid, (4-Ethoxyphenyl)-, Monomethyl Ester (9Ci) is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets the high standards required for research and industrial synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay and impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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