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Sigma-Aldrich

2,2-Di(4-tert-octylphenyl)-1-picrylhydrazyl, freies Radikal

Synonym(e):

DPPH

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About This Item

Empirische Formel (Hill-System):
C34H44N5O6
CAS-Nummer:
84077-81-6
Molekulargewicht:
618.74
MDL-Nummer:
MFCD00012032
UNSPSC-Code:
12352005
PubChem Substanz-ID:
24855599
NACRES:
NA.22

Form

solid

Qualitätsniveau

100

mp (Schmelzpunkt)

171 °C (dec.) (lit.)

λmax

531 nm

Lagertemp.

2-8°C

SMILES String

CC(C)(C)CC(C)(C)c1ccc(cc1)N([N]c2c(cc(cc2[N+]([O-])=O)[N+]([O-])=O)[N+]([O-])=O)c3ccc(cc3)C(C)(C)CC(C)(C)C

InChI

1S/C34H44N5O6/c1-31(2,3)21-33(7,8)23-11-15-25(16-12-23)36(26-17-13-24(14-18-26)34(9,10)22-32(4,5)6)35-30-28(38(42)43)19-27(37(40)41)20-29(30)39(44)45/h11-20H,21-22H2,1-10H3

InChIKey

CLOCMRDQPYXVKP-UHFFFAOYSA-N

Allgemeine Beschreibung

2,2-Di(4-tert-octylphenyl)-1-picrylhydrazyl (DPPH) is classified as a “stable” free radical since it has a long shelf life and can be synthesized and stored under normal laboratory conditions.

Anwendung

2,2-Di(4-tert-octylphenyl)-1-picrylhydrazyl can be used as a calibration standard in electron paramagnetic spectroscopy (EPR) and as a radical scavenger in polymers. It is also used as an efficient reagent in the “DPPH calorimetric assay” to study radical scavenging activities of diverse chemical compounds, mostly of phenolic nature. When DDPF reacts with antioxidant molecules, its color changes from deep purple to pale yellow, which allows the spectrophotometric determination of the antioxidant activity.

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

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