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  4. Methyl Orange

Methyl Orange is a soluble azo dye commonly used as an acid-base indicator and for staining cells and tissue sections, as well as for dyeing textiles. Methyl Orange appears red at a pH of 3.1 and changes to bright yellow as the pH increases to 4.4. Methyl Orange (500 mg/L) exhibits cytotoxicity and can cause DNA damage.

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Methyl Orange

Methyl Orange Chemical Structure

CAS No. : 547-58-0

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Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
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Customer Review

Based on 1 publication(s) in Google Scholar

Other Forms of Methyl Orange:

Methyl Orange Related Antibodies

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  • Purity & Documentation

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Description

Methyl Orange is a soluble azo dye commonly used as an acid-base indicator and for staining cells and tissue sections, as well as for dyeing textiles. Methyl Orange appears red at a pH of 3.1 and changes to bright yellow as the pH increases to 4.4. Methyl Orange (500 mg/L) exhibits cytotoxicity and can cause DNA damage[1][2].

In Vitro

Guidelines (The following is our recommended experimental protocol. This protocol is for reference only, and specific operations should be adjusted according to your actual needs).
1. Acid-Base Indicator[2]
Methyl Orange exhibits a distinct color change at different pH values:
pH < 3.1: Red
pH 3.1 - 4.4: Orange
pH > 4.4: Bright Yellow

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

Methyl Orange Related Antibodies
Molecular Weight

327.34

Formula

C14H14N3NaO3S
CAS No.
Appearance

Solid

Color

Orange to red

SMILES

O=S(C1=CC=C(C=C1)/N=N/C2=CC=C(C=C2)N(C)C)(O[Na])=O
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, sealed storage, away from moisture

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

Solvent & Solubility
In Vitro: 

DMSO : 20 mg/mL (61.10 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 3.0549 mL 15.2746 mL 30.5493 mL
5 mM 0.6110 mL 3.0549 mL 6.1099 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). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
=
Concentration
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Volume
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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 Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

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g

Dosing volume
(per animal)

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Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
Purity & Documentation

Purity: 99.85%

SDS (479 KB)

COA (246 KB) HNMR (247 KB) RP-HPLC (248 KB) MS (71 KB)

Handling Instructions (2659 KB)
References

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). 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 1 mM 3.0549 mL 15.2746 mL 30.5493 mL 76.3732 mL
5 mM 0.6110 mL 3.0549 mL 6.1099 mL 15.2746 mL
10 mM 0.3055 mL 1.5275 mL 3.0549 mL 7.6373 mL
15 mM 0.2037 mL 1.0183 mL 2.0366 mL 5.0915 mL
20 mM 0.1527 mL 0.7637 mL 1.5275 mL 3.8187 mL
25 mM 0.1222 mL 0.6110 mL 1.2220 mL 3.0549 mL
30 mM 0.1018 mL 0.5092 mL 1.0183 mL 2.5458 mL
40 mM 0.0764 mL 0.3819 mL 0.7637 mL 1.9093 mL
50 mM 0.0611 mL 0.3055 mL 0.6110 mL 1.5275 mL
60 mM 0.0509 mL 0.2546 mL 0.5092 mL 1.2729 mL
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Methyl Orange Related Classifications

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:

Methyl Orange547-58-0Fluorescent Dyeazo dyeorganic contaminantInhibitorinhibitorinhibit

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