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DPPH (Synonyms: 2,2-Diphenyl-1-picrylhydrazyl)

Cat. No.: HY-112053 Purity: 98.77%
Handling Instructions

DPPH (2,2-Diphenyl-1-picrylhydrazyl) is a stable free radical that can be used to measure the radical scavenging activity of antioxidants. The odd electron of nitrogen atom in DPPH is reduced by receiving a hydrogen atom from antioxidants to the corresponding hydrazine. DPPH method may be utilized in aqueous and nonpolar organic solvents and can be used to examine both hydrophilic and lipophilic antioxidants.

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DPPH Chemical Structure

DPPH Chemical Structure

CAS No. : 1898-66-4

Size Price Stock Quantity
10 mM * 1 mL in DMSO USD 55 In-stock
Estimated Time of Arrival: December 31
5 mg USD 50 In-stock
Estimated Time of Arrival: December 31
50 mg USD 100 In-stock
Estimated Time of Arrival: December 31
100 mg USD 150 In-stock
Estimated Time of Arrival: December 31
200 mg   Get quote  
500 mg   Get quote  

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Based on 1 publication(s) in Google Scholar

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Description

DPPH (2,2-Diphenyl-1-picrylhydrazyl) is a stable free radical that can be used to measure the radical scavenging activity of antioxidants. The odd electron of nitrogen atom in DPPH is reduced by receiving a hydrogen atom from antioxidants to the corresponding hydrazine. DPPH method may be utilized in aqueous and nonpolar organic solvents and can be used to examine both hydrophilic and lipophilic antioxidants[1].

In Vitro

DPPH shows a strong absorption band at 517 nm due to its odd electron and solution appears a deep violet colour, the absorption vanishes as the electron pairs off. The resulting decolorization is stoichiometric with respect to the number of electrons taken up. The alcoholic solutions of 0.5 mM are densely colored and at this concentration, the Lambert-Beer law is obeyed over the useful range of absorption[1].
DPPH assay is a rapid, simple, inexpensive and widely used method to measure the ability of compounds to act as free radical scavengers or hydrogen donors, and to evaluate antioxidant activity of foods. It can also be used to quantify antioxidants in complex biological systems, for solid or liquid samples. This method is easy and applies to measure the overall antioxidant capacity and the free radical scavenging activity of fruit and vegetable juice. This assay has been successfully utilized for investigating antioxidant properties of wheat grain and bran, vegetables, conjugated linoleic acids, herbs, edible seed oils, and flours in several different solvent systems including ethanol, aqueous acetone, methanol, aqueous alcohol and benzene. It is a convenient method for the antioxidant assay of cysteine, glutathione, ascorbic acid, tocopherol and polyhydroxy aromatic compounds, for olive oil, fruits, juices and wines[1].

Molecular Weight

394.32

Formula

C₁₈H₁₂N₅O₆

CAS No.

1898-66-4

SMILES

O=[N+](C1=C([N]N(C2=CC=CC=C2)C3=CC=CC=C3)C([N+]([O-])=O)=CC([N+]([O-])=O)=C1)[O-]

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Solvent & Solubility
In Vitro: 

DMSO : 62.5 mg/mL (158.50 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.5360 mL 12.6801 mL 25.3601 mL
5 mM 0.5072 mL 2.5360 mL 5.0720 mL
10 mM 0.2536 mL 1.2680 mL 2.5360 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 2.08 mg/mL (5.27 mM); Clear solution

*All of the co-solvents are provided by MCE.
References
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Keywords:

DPPH2,2-Diphenyl-1-picrylhydrazylOthersInhibitorinhibitorinhibit

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DPPH
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HY-112053
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