Description

Ethyl 3,5-Bis((Diphenylphosphino)Oxy)Benzoate is a specialized organophosphorus compound that serves as a valuable ligand precursor and synthetic intermediate. Its molecular architecture, featuring phosphino-oxy groups, makes it a critical component for constructing sophisticated catalysts used in cross-coupling and other transition metal-catalyzed reactions. This high-purity chemical is essential for researchers and process chemists in the pharmaceutical, agrochemical, and advanced materials sectors who require reliable, high-performance building blocks for complex synthesis.

Application

• Catalyst Ligand Synthesis: A key precursor for generating bidentate or multidentate phosphine ligands used in homogeneous catalysis.
• Pharmaceutical Intermediates: Employed in the research and development of active pharmaceutical ingredients (APIs), particularly for constructing complex molecular scaffolds.
• Cross-Coupling Reactions: Facilitates critical bond-forming reactions such as Suzuki, Heck, and Negishi couplings in fine chemical synthesis.
• Agrochemical Research: Used in the synthesis of novel compounds for crop protection and pesticide development.
• Material Science: Acts as a functional monomer or additive in the development of specialized polymers and advanced materials.
• Academic & Industrial R&D: A valuable tool for methodological development and exploring new catalytic processes in chemistry laboratories.

Basic Information

Product Name	Ethyl 3,5-Bis((Diphenylphosphino)Oxy)Benzoate
CAS No.	890130-45-7
Molecular Formula	C39H34O5P2
Molecular Weight	644.63 g/mol
Synonyms	Ethyl 3,5-Bis(diphenylphosphoryloxy)benzoate; Benzoic acid, 3,5-bis[(diphenylphosphino)oxy]-, ethyl ester; 3,5-Bis[(diphenylphosphino)oxy]benzoic acid ethyl ester; Ethyl 3,5-bis(diphenylphosphinite)benzoate; Ligand precursor 890130-45-7; DPOB-Et ester; CAS 890130-45-7
EINECS	Contact for details

Quality Control

Every batch of Ethyl 3,5-Bis((Diphenylphosphino)Oxy)Benzoate is manufactured and tested under strict quality management protocols to ensure consistency and high purity for research and industrial applications. Our products undergo rigorous analytical testing, including HPLC, NMR, and elemental analysis, to confirm identity and purity. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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