6,6-Dimethylfulvene
6,6-Dimethylfulvene (CAS 2175-91-9) is a cyclic alkene with a molecular weight of 106.17 g/mol. This compound serves as a valuable building block in organic synthesis. It is primarily utilised in research and development settings for the creation of more complex molecular structures and novel materials. Its specific reactivity makes it an intermediate of interest in various chemical transformations.
- IUPAC
- 5-(1-Methylethylidene)-1,3-cyclopentadiene,5-Isopropylidene-1,3-cyclopentadiene
- Synonyms
- 5-(1-Methylethylidene)-1,3-cyclopentadiene5-Isopropylidene-1,3-cyclopentadiene

Organic Synthesis
6,6-Dimethylfulvene is employed as a versatile intermediate in organic synthesis, facilitating the construction of diverse carbon frameworks. Its unique structure allows for participation in various cycloaddition and polymerization reactions.
Research and Development
This compound is utilised in R&D laboratories for exploring new synthetic routes and developing novel chemical entities. It is a useful reagent for academic and industrial research into new materials and pharmaceuticals.
Polymer Chemistry
The alkene functionality of 6,6-Dimethylfulvene makes it a potential monomer or co-monomer in polymerisation studies. Research may involve its incorporation into polymer backbones to impart specific properties.
| Molecular weight | 106.17 |
|---|---|
| Empirical formula | C8H10 |
| Assay | ≥97.0% |
| Boiling point | 76-77 °C/50 mmHg(lit.) |
| Density | 0.881 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.548(lit.)n20/D 1.548 |
| Storage temperature | −20°C |


Hazard statements
- H226Flammable liquid and vapour
- H304May be fatal if swallowed and enters airways
Precautionary statements
- P301IF SWALLOWED
- P331Do NOT induce vomiting
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 43 °C / 109.4 °F |
| Transport (UN / ADR) | UN 3295C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 10-65 |
| Safety statements (S) | 16-62 |
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 6,6-Dimethylfulvene used for?
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6,6-Dimethylfulvene is primarily used as a building block in organic synthesis and in research and development for creating new chemical entities and materials.
What is the CAS number and molecular formula for 6,6-Dimethylfulvene?
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The CAS number for 6,6-Dimethylfulvene is 2175-91-9. Its empirical formula is C8H10, with a molecular weight of 106.17 g/mol.
What grade and purity does Tech Serve Solutions supply for 6,6-Dimethylfulvene?
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Tech Serve Solutions supplies 6,6-Dimethylfulvene with an assay of ≥97.0%. This product is intended for research and development use and is not supplied as USP, BP, EP, or pharmacopoeia grade.
How should 6,6-Dimethylfulvene be handled safely?
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6,6-Dimethylfulvene is a flammable liquid and vapour (H226) and may be fatal if swallowed and enters airways (H304). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, in a well-ventilated area. Store at -20°C.
How is 6,6-Dimethylfulvene packed, shipped, and exported?
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6,6-Dimethylfulvene is packed and shipped in compliance with transport regulations, including UN 3295C 3 / PGIII. Tech Serve Solutions is experienced in exporting fine chemicals globally.
How can I request a sample or quote for 6,6-Dimethylfulvene?
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To request a sample or quote for 6,6-Dimethylfulvene, please contact our sales team through the website or by phone, providing your specific requirements.
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