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1,8-Diazafluoren-9-one

Names
IUPAC name 9H-pyridocyclopentapyridin-9-one
Other names DFO 9H-1,8-Diazafluoren-9-one 9H-Cyclopentadipyridin-9-one
Identifiers
CAS Number	54078-29-4
3D model (JSmol)	Interactive image Interactive image
ChemSpider	633891
CompTox Dashboard (EPA)	DTXSID10352406
InChI InChI=1S/C11H6N2O/c14-11-9-7(3-1-5-12-9)8-4-2-6-13-10(8)11/h1-6HKey: FOSUVSBKUIWVKI-UHFFFAOYSA-N InChI=1/C11H6N2O/c14-11-9-7(3-1-5-12-9)8-4-2-6-13-10(8)11/h1-6HKey: FOSUVSBKUIWVKI-UHFFFAOYAH
SMILES O=C1C3=C(C=CC=N3)C2=C1N=CC=C2 O=C3c1ncccc1c2c3nccc2
Properties
Chemical formula	C11H6N2O
Molar mass	182.18 g/mol
Melting point	229-233 °C
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Y verify (what is  ?) 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.

References

1. C.A. Pounds; et al. (1990). J. Forensic Sci. 35: 169. {{cite journal}}: Explicit use of et al. in: |author= (help); Missing or empty |title= (help)

External links

• RCMP report on 1,8-diazafluoren-9-one

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