1,8-Diazafluoren-9-one | |
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9H-pyrido[3',2':3,4]cyclopenta[1,2-b]pyridin-9-one |
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Other names
DFO |
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Identifiers | |
CAS number | 54078-29-4 |
ChemSpider | 633891 |
Jmol-3D images | Image 1 Image 2 |
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Properties | |
Molecular formula | C11H6N2O |
Molar mass | 182.18 g/mol |
Melting point |
229-233 °C |
(verify) (what is: / ?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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Infobox references |
1,8-Diazafluoren-9-one, also known as DFO, is a chemical that is used to find fingerprints on porous surfaces. It makes fingerprints glow when they are lit by blue-green light.
DFO reacts with amino acids present in the fingerprint to form highly fluorescent derivatives. Excitation with light at ~470 nm results in emission at ~570 nm.[1]