9-Methylene-fluorene
| Names | |
|---|---|
| Preferred IUPAC name
 9-Methylidene-9H-fluorene  | |
| Other names
 Methylenefluorene 9-Methylidenefluorene Dibenzofulvene  | |
| Identifiers | |
3D model (JSmol)  | 
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| ChemSpider | |
| ECHA InfoCard | 100.251.583 | 
PubChem CID  | 
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| UNII | |
CompTox Dashboard (EPA)  | 
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| Properties | |
| C14H10 | |
| Molar mass | 178.234 g·mol−1 | 
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 
Infobox references  | |
9-Methylene-fluorene or dibenzofulvene (DBF) is a polycyclic aromatic hydrocarbon with chemical formula (C6H4)2C=CH2. It is best known as one product from deprotection of the Fmoc group. It can be prepared by treatment of 9-hydroxymethylfluorene with strong base.