257621

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2,2-Di(4-tert-octylphenyl)-1-picrylhydrazyl, free radical

All Photos(1)

Empirical Formula (Hill Notation):

C₃₄H₄₄N₅O₆

CAS Number:

84077-81-6

Molecular Weight:

618.74

MDL number:

MFCD00012032

PubChem Substance ID:

24855599

NACRES:

NA.22

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Ferric Reducing Antioxidant Power (FRAP) Assay Kit (Colorimetric)

form

solid

Quality Level

100

mp

171 °C (dec.) (lit.)

λ_max

531 nm

storage temp.

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

InChI key

CLOCMRDQPYXVKP-UHFFFAOYSA-N

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This Item	379379	659142	PHR9134
Sigma-Aldrich 257621 2,2-Di(4-tert-octylphenyl)-1-picrylhydrazyl, free radical	Sigma-Aldrich 379379 2,7-Di-tert-butyl-9,9-dimethylxanthene-4,5-dicarboxylic acid	Sigma-Aldrich 659142 Di-tert-butyl 2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate	Supelco PHR9134 2-(4-tert-Butyl-3-hydroxy-2,6-dimethylphenyl)acetic acid
form solid	form -	form solid	form solid
mp 171 °C (dec.) (lit.)	mp -	mp 142-149 °C	mp -
storage temp. 2-8°C	storage temp. -	storage temp. 2-8°C	storage temp. −20°C
Quality Level 100	Quality Level -	Quality Level 100	Quality Level 300
λ_max 531 nm	λ_max -	λ_max -	λ_max -

General description

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.

Application

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.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

2,2-Di(4-tert-octylphenyl)-1-picrylhydrazyl, free radical

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Properties