Description

Phosphine Oxide, Ethynyldiphenyl- CAS NO 6104-48-9 is a specialized organophosphorus compound featuring a unique ethynyl group attached to a diphenylphosphine oxide core. This structure makes it a valuable intermediate and ligand in advanced chemical synthesis, particularly for creating novel materials with tailored electronic and optical properties. It is primarily sought by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for applications requiring precise molecular control.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and novel drug candidates, particularly those requiring phosphorus-based functional groups.
• Agrochemical Synthesis: Serves as a key building block for creating advanced herbicides, fungicides, and plant growth regulators.
• Ligand in Catalysis: Acts as a ligand for transition metal catalysts in cross-coupling reactions (e.g., Sonogashira, Suzuki) and other organometallic transformations.
• Material Science Research: Employed in the development of organic light-emitting diodes (OLEDs), semiconductors, and other electronic materials due to its conjugated ethynyl system.
• Flame Retardant Synergist: Investigated for use as a component in flame-retardant formulations for polymers and textiles.
• Organic Synthesis Building Block: Utilized in academic and industrial research for constructing complex molecules via alkyne-based chemistry.

Basic Information

Product Name	Phosphine Oxide, Ethynyldiphenyl-
CAS No.	6104-48-9
Molecular Formula	C14H11OP
Molecular Weight	226.21 g/mol
Synonyms	(Ethynyl)diphenylphosphine oxide; Diphenyl(ethynyl)phosphine oxide; Ethynyl-diphenyl-phosphine oxide; Ethynyldiphenylphosphine oxide; (Phenylethynyl)diphenylphosphine oxide (related); DPEPO (common abbreviation); EDPO
EINECS	Contact for details

Quality Control

Our Phosphine Oxide, Ethynyldiphenyl- is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity, NMR for structural confirmation, and Karl Fischer titration for moisture content, to ensure it meets the high standards required for research and industrial synthesis. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing traceability and consistent quality.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) for long-term storage 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
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%

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