9,9-Dimethylfluorene-2-boronic acid pinacol ester
9,9-Dimethylfluorene-2-boronic acid pinacol ester (CAS 569343-09-5) is an organic compound with a molecular weight of 320.23 g/mol. This fluorene derivative, often referred to as FL-BE, serves as a valuable intermediate and building block in organic synthesis. It finds primary application in the fields of materials science and organic electronics, facilitating the development of advanced materials and functional devices.
- IUPAC
- 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane,FL-BE
- Synonyms
- 2-(9,9-Dimethyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneFL-BE

Organic and Printed Electronics
As a key building block, 9,9-Dimethylfluorene-2-boronic acid pinacol ester is employed in the synthesis of conjugated polymers and small molecules for applications in organic light-emitting diodes (OLEDs), organic field-effect transistors (OFETs), and organic photovoltaics (OPVs).
Materials Science Research
This compound's unique fluorene structure allows for tailored electronic and optical properties, making it a useful reagent in materials science for developing novel functional materials with specific characteristics.
Synthetic Intermediates
It acts as a versatile intermediate in multi-step organic syntheses, enabling chemists to introduce the 9,9-dimethylfluorene moiety into complex molecular architectures.
| Molecular weight | 320.23 |
|---|---|
| Empirical formula | C21H25BO2 |
| Assay | 95% |
| Melting point | 130-135 °C |
Hazard statements
- H413May cause long-lasting harmful effects to aquatic life
| Water hazard class (WGK, DE) | 3 |
|---|
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 9,9-Dimethylfluorene-2-boronic acid pinacol ester used for?
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9,9-Dimethylfluorene-2-boronic acid pinacol ester is used as a synthetic intermediate and building block in materials science, particularly for organic and printed electronics, to construct advanced organic materials.
What is the CAS number and formula for 9,9-Dimethylfluorene-2-boronic acid pinacol ester?
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The CAS number is 569343-09-5 and the molecular formula is C21H25BO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 9,9-Dimethylfluorene-2-boronic acid pinacol ester with a minimum assay of 95%. This product is suitable for research and development purposes; TSS does not represent it as USP, BP, EP, or other pharmacopoeia grades.
What are the safety and handling considerations for this product?
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This compound is classified with the hazard statement H413 (May cause long lasting harmful effects to aquatic life). Handle with appropriate personal protective equipment in a well-ventilated area, and avoid release into the environment. Consult the Safety Data Sheet (SDS) for comprehensive handling information.
How is this product packed, shipped, and exported?
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9,9-Dimethylfluorene-2-boronic acid pinacol ester is carefully packed according to industry standards for safe transport. TSS is experienced in global export and can provide shipping documentation as required.
How can I request a sample or a quote?
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To request a sample or a quotation for 9,9-Dimethylfluorene-2-boronic acid pinacol ester, please contact our sales department through the website or by email, providing your contact details and required quantity.
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