1,8-Diazafluoran-9-one

Names

[ Name ]:
1,8-Diazafluoran-9-one

[Synonym ]:
9H-Pyrido[3',2':3,4]cyclopenta[1,2-b]pyridin-9-one
1,8-diazafluoran-9-one
Cyclopenta[1,2-b:4,3-b']dipyridin-9-one
Cyclopenta[1,2-b:4,3-b’]dipyridin-9-one
9H-Cyclopenta[1,2-b:4,3-b']dipyridin-9-one
DFO

Biological Activity

[Description]:

DFO (9H-1,8-Diazafluoren-9-one) is a chemical that is used to find fingerprints on porous surfaces.

[Related Catalog]:

Signaling Pathways >> Others >> Others

Dye Reagents

Research Areas >> Others

[In Vitro]

1,2-indanedione (1,2-IND) and 1,8-diazafluoren-9-one (DFO) are used in the forensic field to enhance latent fingerprints deposited on porous surfaces due to the formation of fluorescent products by reacting with the amino acids present in the papillary exudate. DFO has been the most used because of its excellent enhancing properties, even if it is more expensive and relatively toxic in comparison with the 1,2-IND[1].

[References]

[1]. D'Elia V, et al. Evaluation and comparison of 1,2-indanedione and 1,8-diazafluoren-9-one solutions for the enhancement of latent fingerprints on porous surfaces. Forensic Sci Int. 2015 Sep;254:205-14.

[Related Small Molecules]

Chemical & Physical Properties

[ Density]:
1.4±0.1 g/cm3

[ Boiling Point ]:
396.3±17.0 °C at 760 mmHg

[ Melting Point ]:
229-233ºC

[ Molecular Formula ]:
C₁₁H₆N₂O

[ Molecular Weight ]:
182.178

[ Flash Point ]:
196.1±27.4 °C

[ Exact Mass ]:
182.048019

[ PSA ]:
42.85000

[ LogP ]:
0.98

[ Vapour Pressure ]:
0.0±0.9 mmHg at 25°C

[ Index of Refraction ]:
1.689

[ Storage condition ]:
2-8°C

[ Stability ]:
Stable. Incompatible with strong oxidizing agents.

[ Water Solubility ]:
acetic acid: 10 mg/mL, clear

MSDS

Click to get detail MSDS

Safety Information

[ Personal Protective Equipment ]:
Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter

[ Hazard Codes ]:
Xi

[ Safety Phrases ]:
S22-S24/25

[ RIDADR ]:
NONH for all modes of transport

[ WGK Germany ]:
3

[ HS Code ]:
2933399090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

DownStream

Customs

[ HS Code ]: 2933399090

[ Summary ]:
2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Articles

Enhancement of ninhydrin- or DFO-treated latent fingerprints on thermal paper.

J. Forensic Sci. 52 , 649-655, (2007)

A new method for enhancement of ninhydrin or 1,8-diazafluoren-9-one (DFO)-treated latent fingerprints on thermal paper will be described. Most thermosensitive surfaces of thermal paper become dark whe...

Study of the reaction mechanism of 1,8-diazafluoren-9-one with the amino acid, L-alanine.

Forensic Sci. Int. 109 , 87-103, (2000)

This paper describes the study of the reaction between 1, 8-diazafluoren-9-one (DFO) with the amino acid L-alanine in methyl alcohol. Particular interest was paid to the possible role of the solvent w...

Use of an optimized 1,2-indanedione process for the development of latent prints*.

J. Forensic Sci. 53 , 1108-1116, (2008)

1,2-Indanedione belongs to a class of compounds which have demonstrated great potential in the processing of latent prints, particularly in the area of fluorescence. However, variability in results ac...