Description

9-Fluorenylidene Triphenylphosphorane CAS NO 4756-25-6 is a specialized organophosphorus reagent, specifically a phosphorus ylide, widely used in synthetic organic chemistry. Its core value proposition lies in its role as a key precursor for the synthesis of complex organic molecules, particularly through Wittig and related olefination reactions. This compound is essential for researchers and process chemists in the pharmaceutical, agrochemical, and advanced materials sectors who require high-purity intermediates for constructing carbon-carbon double bonds with precision.

Application

• Key reagent in Wittig olefination reactions for the synthesis of alkenes.
• Precursor for the preparation of fluorenylidene-containing compounds used in material science.
• Intermediate in the synthesis of pharmaceutical active ingredients (APIs) and complex natural products.
• Building block for organic light-emitting diodes (OLEDs) and other electronic materials.
• Used in catalyst ligand development and organometallic chemistry research.
• Facilitates the synthesis of specialty polymers and fine chemicals.

Basic Information

Product Name	9-Fluorenylidene Triphenylphosphorane
CAS No.	4756-25-6
Molecular Formula	C₃₁H₂₃P
Molecular Weight	426.49 g/mol
Synonyms	Triphenyl(9H-fluoren-9-ylidene)phosphorane; 9-Fluorenylidenetriphenylphosphorane; (9-Fluorenylidene)triphenyl-λ⁵-phosphane; Fluorenylidene triphenyl phosphorane; 9-Fluorenylidenetriphenyl-λ⁵-phosphane; Phosphorane, triphenyl(9H-fluoren-9-ylidene)-; 9-Fluorenylidene triphenyl phosphine ylide
EINECS	Contact for details

Quality Control

Our 9-Fluorenylidene Triphenylphosphorane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including NMR, HPLC, and elemental analysis, to ensure high purity and batch-to-batch consistency. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry place at 15-25°C. This material is easily oxidized and light-sensitive; prolonged exposure to air or light should be avoided to maintain stability and efficacy.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
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.