Basic Description

Synonyms	sodium;2-[[4-(dimethylamino)phenyl]diazenyl]benzoate \| SCHEMBL4639900 \| sodium 2-{2-[4-(dimethylamino)phenyl]diazen-1-yl}benzoate \| FT-0628805 \| BENZOIC ACID, 2-(2-(4-(DIMETHYLAMINO)PHENYL)DIAZENYL)-, SODIUM SALT \| Benzoic acid, 2-[[4-(dimethylamino)pheny
Specifications & Purity	ACS, ≥95%
Biochemical and Physiological Mechanisms	Methyl Red is a pH indicator and it changes color at a pH of 5.5.pH indicator turning red under pH 4.4, yellow over pH 6.2, and orange in between those values. Azo dye used in microbiology to identify bacteria that produce stable acids through mixed acid
Storage Temp	Protected from light,Desiccated
Shipped In	Normal
Grade	ACS
Note	Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Product Description	Methyl Red is an azo dye that indicates the presence of acid in the culture medium, which is formed due to fermentation of sugar by bacteria. This red dye is reduced to orange color in the presence of acid. Methyl Red has been used as a part of IMViC (indole, methyl red, Voges-Proskauer and citrate utilization or catalase production test). IMViC is a biochemical test performed to differentiate among the coliforms, specifically Escherichia coli and Enterobacter aerogene. Methyl red sodium salt is the sodium salt of methyl red synthetic dye, which belongs to the azo group of dyes.

Taxonomic Classification

Taxonomy Tree

Kingdom Organic compounds
- Superclass Organoheterocyclic compounds
  - Class Azobenzenes

Kingdom	Organic compounds
Superclass	Organoheterocyclic compounds
Class	Azobenzenes
Subclass	Not available
Intermediate Tree Nodes	Not available
Direct Parent	Azobenzenes
Alternative Parents	Benzoic acids Dialkylarylamines Benzoyl derivatives Aniline and substituted anilines Carboxylic acid salts Azo compounds Amino acids Propargyl-type 1,3-dipolar organic compounds Carboxylic acids Organooxygen compounds Organic zwitterions Organic sodium salts Organic oxides Hydrocarbon derivatives
Molecular Framework	Aromatic homomonocyclic compounds
Substituents	Azobenzene - Benzoic acid or derivatives - Benzoic acid - Benzoyl - Tertiary aliphatic/aromatic amine - Dialkylarylamine - Aniline or substituted anilines - Benzenoid - Monocyclic benzene moiety - Azo compound - Amino acid - Tertiary amine - Amino acid or derivatives - Carboxylic acid salt - Organic alkali metal salt - Organic 1,3-dipolar compound - Propargyl-type 1,3-dipolar organic compound - Carboxylic acid derivative - Carboxylic acid - Hydrocarbon derivative - Organonitrogen compound - Organooxygen compound - Organic oxide - Amine - Organic oxygen compound - Organic nitrogen compound - Organic zwitterion - Organic sodium salt - Organic salt - Aromatic homomonocyclic compound
Description	This compound belongs to the class of organic compounds known as azobenzenes. These are organonitrogen aromatic compounds that contain a central azo group, where each nitrogen atom is conjugated to a benzene ring.
External Descriptors	Not available
1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61. DOI: 10.1186/s13321-016-0174-y

Names and Identifiers

Pubchem Sid	504763036
Pubchem Sid Url	https://pubchem.ncbi.nlm.nih.gov/substance/504763036
IUPAC Name	sodium;2-[[4-(dimethylamino)phenyl]diazenyl]benzoate
INCHI	InChI=1S/C15H15N3O2.Na/c1-18(2)12-9-7-11(8-10-12)16-17-14-6-4-3-5-13(14)15(19)20;/h3-10H,1-2H3,(H,19,20);/q;+1/p-1
InChIKey	GNTPCYMJCJNRQB-UHFFFAOYSA-M
Smiles	CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)[O-].[Na+]
Isomeric SMILES	CN(C)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)[O-].[Na+]
Molecular Weight	291.28
Beilstein	16329
Reaxy-Rn	4065488
Reaxys-RN_link_address	https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=4065488&ln=

Certificates（CoA,COO,BSE/TSE and Analysis Chart)

C of A & Other Certificates(BSE/TSE, COO):

Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

9 results found

Lot Number	Certificate Type	Date	Item
A2127197	Certificate of Analysis	Nov 15, 2024	M102297
G1915193	Certificate of Analysis	May 06, 2023	M102297
C2324117	Certificate of Analysis	Jan 28, 2023	M102297
C2324118	Certificate of Analysis	Jan 28, 2023	M102297
C2528224	Certificate of Analysis	Jan 28, 2023	M102297
C2324119	Certificate of Analysis	Jan 28, 2023	M102297
K2204915	Certificate of Analysis	Aug 30, 2022	M102297
B2309249	Certificate of Analysis	Oct 30, 2021	M102297
B2309294	Certificate of Analysis	Oct 30, 2021	M102297

Chemical and Physical Properties

Solubility	Soluble in water (800 mg/ml at 25°C), and slightly soluble in ethanol at (25°C).
Sensitivity	Light sensitive.
Molecular Weight	291.280 g/mol
XLogP3
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	4
Exact Mass	291.098 Da
Monoisotopic Mass	291.098 Da
Topological Polar Surface Area	68.100 Å²
Heavy Atom Count	21
Formal Charge	0
Complexity	355.000
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
The total count of all stereochemical bonds	0
Covalently-Bonded Unit Count	2

Citations of This Product

How to Cite Aladdin Scientific Products?

1. Tang Peixin, Si Yang, Song Xiyu, Sun Gang. (2023) Hierarchically porous bacterial cellulose nanofibrous membranes for selective adsorption and real-time colorimetric monitoring of volatile carboxylic acids. CELLULOSE, (1-13).
2. Li-Jun Xu, Xuan-Yu Shi, Meng-Ying Chai, Jian Ji, Zhi-Kang Xu, Ling-Shu Wan. (2020) Surface Metallization of Porous Polymer Materials for Multifunctional Applications. LANGMUIR, 36 (6): (1454–1461).
3. Guo-Jun Wang, Bai-Heng Wu, Zhi-Kang Xu, Ling-Shu Wan. (2019) Janus polymer membranes prepared by single-side polydopamine deposition for dye adsorption and fine bubble aeration. Materials Chemistry Frontiers, 3 (10): (2102-2109).

Solution Calculators

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SKU	Size	Availability	Price
M102297-5g	5g	5	$9.90
M102297-25g	25g	4	$26.90
M102297-100g	100g	3	$76.90
M102297-500g	500g	Available within 8-12 weeks(?) Production requires sourcing of materials. We appreciate your patience and understanding.	$344.90

Methyl Red sodium salt - ACS reagent,95 %, high purity , CAS No.845-10-3