Description

(4-Cyano-Phenyl)-Phosphonic Acid is a high-purity, functionalized phosphonic acid derivative of significant commercial and research interest. This compound serves as a versatile key building block and surface modifier in advanced material synthesis. It is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and specialty materials sectors seeking to incorporate phosphonate functionality into complex molecular architectures.

Application

• Pharmaceutical Intermediates: A critical precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those targeting bone metabolism or requiring specific metal-chelating properties.
• Agrochemical Synthesis: Used in the development of modern herbicides and plant growth regulators, where the phosphonic acid group enhances systemic activity and bioavailability.
• Metal-Organic Frameworks (MOFs): Acts as a functional organic linker to create porous coordination polymers with tailored properties for gas storage, separation, and catalysis.
• Surface Functionalization Agent: Employed to modify the surface of metal oxides (e.g., titanium dioxide, indium tin oxide) in sensors, biomedical devices, and organic electronics to improve adhesion and performance.
• Ligand for Catalysis: Serves as a chelating ligand in homogeneous catalysis, facilitating various cross-coupling and organic transformation reactions.
• Flame Retardant Additive: Incorporated into polymer matrices as a reactive or additive flame retardant, leveraging the phosphorus content to enhance material safety.

Basic Information

Product Name	(4-Cyano-Phenyl)-Phosphonic Acid
CAS No.	16672-78-9
Molecular Formula	C7H6NO3P
Molecular Weight	183.10 g/mol
Synonyms	4-Cyanophenylphosphonic Acid; p-Cyanophenylphosphonic Acid; (4-Cyanophenyl)phosphonic Acid; Phosphonic acid, P-(4-cyanophenyl)-; 4-Cyanobenzene phosphonic acid; 4-Cyanophenylphosphonate; p-Cyanobenzylphosphonic Acid (common misnomer); 4-Cyanophenylphosphorus acid
EINECS	Contact for details

Quality Control

Our (4-Cyano-Phenyl)-Phosphonic Acid is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC, NMR, and FTIR, to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications. We support cGMP and ISO 9001 aligned practices for traceability and quality assurance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product stability and performance. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Melting Point	Contact for details
Heavy Metals	< 20 ppm

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