5-Methylthio Ninhydrin and Related Compounds: A Novel Class of Fluorogenic Fingerprint Reagents

Joseph Almog · Amiram Hirshfeld · A. Frank · Zev Harel · Yitzhak Ittah

29 citations0/0 files storedJournal of Forensic Sciences

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Forensic Fingerprint Detection Methods Biometric Identification and Security Molecular Sensors and Ion Detection

Abstract

Abstract Ninhydrin derivatives bearing sulfur-containing groups at position 5 exhibit excellent properties as fluorogenic fingerprint reagents on paper. Their sensitivity markedly exceeds that of ninhydrin and even that of 5-methoxy ninhydrin. Preliminary experiments indicate it as equal to or better than 1–8-diazafluorene-9-one (DFO). One member of this group, 5-methylthio ninhydrin, has been recently declared an operational fingerprint developer in our laboratory.

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References

1990The Use of 1,8-Diazafluoren-9-one (DFO) for the Fluorescent Detection of Latent Fingerprints on Paper. A Preliminary Evaluation 19901,8-diazafluorenone and related compounds. A new reagent for the detection of (α-amino acids and latent fingerprints.1982Laser Detection of Latent Fingerprints: Ninhydrin Followed by Zinc Chloride 1986Synthesis of Ninhydrin Analogues and Their Application to Fingerprint Development: Preliminary Results 1979On the detection of fingerprints by laser excited luminescence 19885-Methoxyninhydrin: A Reagent for the Chemical Development of Latent Fingerprints That Is Compatible with the Copper-Vapor Laser

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2001Synthetic studies of novel ninhydrin analogs 2001The effect of metal salt treatment on the photoluminescence of DFO-treated fingerprints 2018Latent print development 1993Europium aryl-β-diketone complexes as fluorescent dyes for the detection of cyanoacrylate developed fingerprints on human skin 2008Dual Fingerprint Reagents with Enhanced Sensitivity: 5‐Methoxy‐ and 5‐Methylthioninhydrin 1993Spectroscopy of Rare Earth-Ruhemann's Purple Complexes

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