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> Ponceau 4R [2611-82-7]

Ponceau 4R [2611-82-7]

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Ponceau 4R is a synthetic colorant that can be used for food coloring. Ponceau 4R is a strawberry red azo dye that can be used in a variety of foods, usually synthesized from aromatic hydrocarbons, and is stable to light, heat, and acids.

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Ponceau 4R Chemical Structure

Ponceau 4R Chemical Structure

CAS No. : 2611-82-7

This product is a controlled substance and not for sale in your territory.

Based on 1 publication(s) in Google Scholar

Description

Ponceau 4R is a synthetic colorant that can be used for food coloring. Ponceau 4R is a strawberry red azo dye that can be used in a variety of foods, usually synthesized from aromatic hydrocarbons, and is stable to light, heat, and acids[1][2].

In Vivo

Ponceau 4R (31, 37, 137 mg/kg for cats, dogs, fish, added to feed) is a maximum safe dose with no effect on cats, dogs and fish[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Masse moléculaire

604.47

Formule

C20H11N2Na3O10S3
CAS No.

2611-82-7

Appearance

Solid

Color

Brown to red

SMILES

O=S(C1=C2C(/N=N/C3=C4C=CC=CC4=C(S(=O)(O[Na])=O)C=C3)=C(O)C=CC2=CC(S(=O)(O[Na])=O)=C1)(O[Na])=O
Livraison

Room temperature in continental US; may vary elsewhere.
Stockage

4°C, sealed storage, away from moisture and light

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

Solvant et solubilité
In Vitro: 

H2O : 25 mg/mL (41.36 mM; Need ultrasonic)

DMSO : 10 mg/mL (16.54 mM; ultrasonic and warming and heat to 60°C; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.6543 mL 8.2717 mL 16.5434 mL
5 mM 0.3309 mL 1.6543 mL 3.3087 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • Calculateur de molarité

  • Calculateur de dilution

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

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

    Solubility: ≥ 1 mg/mL (1.65 mM); Clear solution

    This protocol yields a clear solution of ≥ 1 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 1 mg/mL (1.65 mM); Clear solution

    This protocol yields a clear solution of ≥ 1 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  PBS

    Solubility: 50 mg/mL (82.72 mM); Clear solution; Need ultrasonic

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
Pureté et documentation

Purity: 99.09%

SDS (394 KB)

COA (260 KB) HNMR (293 KB) LCMS (95 KB)

Instruction de manipulation (2659 KB)
Références

  • [1]. Rychen G, et al. Safety and efficacy of ponceau 4R for cats, dogs and ornamental fish. EFSA J. 2018 Mar 29;16(3):e05222.  [Content Brief]

    [2]. Dong Y, et al. Quantification of Ponceau 4R in Foods by Indirect Competitive Enzyme-Linked Immunosorbent Assay (icELISA). J Agric Food Chem. 2015 Jul 22;63(28):6338-45.  [Content Brief]

  • [1]. Rychen G, et al. Safety and efficacy of ponceau 4R for cats, dogs and ornamental fish. EFSA J. 2018 Mar 29;16(3):e05222.

    [2]. Dong Y, et al. Quantification of Ponceau 4R in Foods by Indirect Competitive Enzyme-Linked Immunosorbent Assay (icELISA). J Agric Food Chem. 2015 Jul 22;63(28):6338-45.

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO / H2O 1 mM 1.6543 mL 8.2717 mL 16.5434 mL 41.3585 mL
5 mM 0.3309 mL 1.6543 mL 3.3087 mL 8.2717 mL
10 mM 0.1654 mL 0.8272 mL 1.6543 mL 4.1359 mL
15 mM 0.1103 mL 0.5514 mL 1.1029 mL 2.7572 mL
H2O 20 mM 0.0827 mL 0.4136 mL 0.8272 mL 2.0679 mL
25 mM 0.0662 mL 0.3309 mL 0.6617 mL 1.6543 mL
30 mM 0.0551 mL 0.2757 mL 0.5514 mL 1.3786 mL
40 mM 0.0414 mL 0.2068 mL 0.4136 mL 1.0340 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Ponceau 4R Related Classifications

  • Others
  • Others
  • Fluorescent Dye
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Ponceau 4R2611-82-7Acid Red 18 New CoccineAcid Red18Acid Red-18Fluorescent Dyecats and dogscolourantornamental fishsafetyInhibitorinhibitorinhibit

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