Description

2,3,7,8-Tetramethyl-5-Phenyl-1,4,6,9-Tetraoxa-5-Phospha(V)Spiro[4.4]Nonane is a specialized organophosphorus compound featuring a unique spirocyclic structure, which imparts distinct chemical reactivity and stability. This compound is valued as a key intermediate and ligand in advanced chemical synthesis, particularly for creating novel materials and catalysts. It is primarily sought by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty polymer sectors for developing high-performance products.

Application

• As a ligand in transition metal catalysis for cross-coupling and other organic transformations.
• As a key synthetic intermediate in the research and development of novel pharmaceutical actives.
• In the synthesis of specialty agrochemicals, including advanced herbicides and plant growth regulators.
• For the development of flame-retardant additives and other functional modifiers in polymer science.
• In material science research for creating novel coordination complexes and metal-organic frameworks (MOFs).
• As a precursor for chiral phosphine ligands, which are critical in asymmetric synthesis.

Basic Information

Product Name	2,3,7,8-Tetramethyl-5-Phenyl-1,4,6,9-Tetraoxa-5-Phospha(V)Spiro[4.4]Nonane
CAS No.	74810-56-3
Molecular Formula	C15H19O4P
Molecular Weight	294.28 g/mol
Synonyms	5-Phenyl-2,3,7,8-tetramethyl-1,4,6,9-tetraoxa-5-phosphaspiro[4.4]nonane; 5-Phenyl-2,3,7,8-tetramethyl-1,4,6,9-tetraoxa-5-phosphaspiro[4.4]nonane; Spirocyclic Phosphite Ester; Phenyl-Substituted Spiro Phosphite; Tetramethyl Phenyl Spiro Phosphite; 74810-56-3; 5-Phospha(V)spiro[4.4]nonane derivative
EINECS	Contact for details

Quality Control

Every batch of our 2,3,7,8-Tetramethyl-5-Phenyl-1,4,6,9-Tetraoxa-5-Phospha(V)Spiro[4.4]Nonane undergoes rigorous analytical testing to ensure high purity and consistent quality. Our quality management system is designed to meet the stringent requirements of research and industrial applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee full traceability and compliance.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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