1,8-Diazafluoren-9-one

1,8-Diazafluoren-9-one
IUPAC name 9H-pyrido[3',2':3,4]cyclopenta[1,2-b]pyridin-9-one
Other names DFO 9H-1,8-Diazafluoren-9-one 9H-Cyclopenta[1,2-b:4,3-b']dipyridin-9-one
Identifiers
CAS number	54078-29-4
ChemSpider	633891 Y
Jmol-3D images	Image 1 Image 2
SMILES O=C1C3=C(C=CC=N3)C2=C1N=CC=C2 O=C3c1ncccc1c2c3nccc2
InChI InChI=1S/C11H6N2O/c14-11-9-7(3-1-5-12-9)8-4-2-6-13-10(8)11/h1-6H Y Key: FOSUVSBKUIWVKI-UHFFFAOYSA-N Y InChI=1/C11H6N2O/c14-11-9-7(3-1-5-12-9)8-4-2-6-13-10(8)11/h1-6H Key: FOSUVSBKUIWVKI-UHFFFAOYAH
Properties
Molecular formula	C11H6N2O
Molar mass	182.18 g/mol
Melting point	229-233 °C
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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]

References

1. ^ C.A. Pounds et al. (1990). J. Forensic Sci. 35: 169. 

External links

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

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