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Substance Name: 1,1-Diphenyl-2-picrylhydrazyl (free radical)
RN: 1898-66-4
UNII: DFD3H4VGDH
InChIKey: HHEAADYXPMHMCT-UHFFFAOYSA-N

Note

  • A diphenyl picrate; the ability to decolorize this stable radical indicates reactivity of tested compounds (Banda, Anal Chem 46:1772-7 1974).

Molecular Formula

  • C18-H12-N5-O6

Molecular Weight

  • 394.3218
 

Classification Code

  • Indicators and Reagents
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Names and Synonyms

Name of Substance

  • 1,1-Diphenyl-2-picrylhydrazyl
  • 1,1-Diphenyl-2-picrylhydrazyl (free radical)

Synonyms

  • 2,2-Diphenyl-1-(2,4,6-trinitrophenyl)hydrazyl
  • 2,2-Diphenyl-1-picrylhydrazyl
  • 4-15-00-01210 (Beilstein Handbook Reference)
  • AI3-61739
  • BRN 1846081
  • Diphenylpicrylhydrazyl free radical
  • DPPH
  • EINECS 217-591-8
  • N,N-Diphenyl-N'-picrylhydrazyl
  • NSC 12562
  • UNII-DFD3H4VGDH

Systematic Names

  • 2,2-Diphenyl-1-picrylhydrazyl
  • Hydrazinyl, 2,2-diphenyl-1-(2,4,6-trinitrophenyl)-
  • Hydrazyl, 2,2-diphenyl-1-(2,4,6-trinitrophenyl)-
  • Hydrazyl, 2,2-diphenyl-1-picryl- (8CI)

Registry Numbers

CAS Registry Number

  • 1898-66-4

FDA UNII

  • DFD3H4VGDH

Other Registry Numbers

  • 111051-84-4
  • 56537-16-7

System Generated Number

  • 0001898664

Structure Descriptors

InChI

InChI=1S/C18H12N5O6/c24-21(25)15-11-16(22(26)27)18(17(12-15)23(28)29)19-20(13-7-3-1-4-8-13)14-9-5-2-6-10-14/h1-12H

InChIKey

HHEAADYXPMHMCT-UHFFFAOYSA-N

Smiles

[O-][N+](=O)c1cc(c([N]N(c2ccccc2)c3ccccc3)c(c1)[N+](=O)[O-])[N+](=O)[O-]

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intravenous 1800ug/kg (1.8mg/kg)   U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#06207,

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 129 dec deg C   EXP
log P (octanol-water) 4.900 (none)   EST
Atmospheric OH Rate Constant 2.48E-11 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.