Skip to the beginning of the images gallery

Cresol Red sodium salt - indicator grade, high purity , CAS No.62625-29-0

COA

Grade & Purity:

indicator

Cas Number: 62625-29-0
Molecular Weight: 404.41
EC Number: 263-654-8
MDL number: MFCD00001618
PubChem CID: 23692294
PubChem SID: 488200560

In stock

Item Number

C121939

Grouped product items
SKU	Size	Availability	Price
C121939-1g	1g	7	$9.90
C121939-5g	5g	3	$38.90
C121939-25g	25g	3	$175.90
C121939-100g	100g	3	$632.90

pH indicator dye.

View related series

PH determination reagent (7) Titration indicator (58)

Basic Description

Synonyms	A833896 \| AKOS016013198 \| Sodium hydrogen 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bis(2-methylphenolate) S,S-dioxide \| sodium 2-methyl-4-[3-(3-methyl-4-oxidanyl-phenyl)-1,1-bis(oxidanylidene)-2,1$l^{6}-benzoxathiol-3-yl]phenolate \| Sodium 4-(3-(4-hydroxy-3-me
Specifications & Purity	indicator
Biochemical and Physiological Mechanisms	pH indicator with color changes for acidic solutions of pH 0.2 (red) to pH 1.8 (yellow), and for basic solutions of pH 7.2 (yellow) to pH 8.8 (red). Used in many common molecular biology reactions in place of other loading dyes.
Legal Information	glass bottle
Shipped In	Normal
Grade	indicator
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.

Taxonomic Classification

Taxonomy Tree

Kingdom Organic compounds
- Superclass Organoheterocyclic compounds
  - Class Benzofurans
    - Subclass Benzofuranones

Kingdom	Organic compounds
Superclass	Organoheterocyclic compounds
Class	Benzofurans
Subclass	Benzofuranones
Intermediate Tree Nodes	Not available
Direct Parent	Benzofuranones
Alternative Parents	Phthalides Benzoxathioles Ortho cresols Toluenes Phenoxides 1-hydroxy-2-unsubstituted benzenoids Organosulfonic acid esters Oxacyclic compounds Organooxygen compounds Organic sodium salts Organic oxides Hydrocarbon derivatives Organic cations
Molecular Framework	Aromatic heteropolycyclic compounds
Substituents	Benzofuranone - Phthalide - Benzoxathiole - O-cresol - 1-hydroxy-2-unsubstituted benzenoid - Phenol - Phenoxide - Toluene - Monocyclic benzene moiety - Organosulfonic acid ester - Benzenoid - Organosulfonic acid or derivatives - Organic sulfonic acid or derivatives - Organic alkali metal salt - Oxacycle - Organic sodium salt - Hydrocarbon derivative - Organooxygen compound - Organic oxide - Organic salt - Organic oxygen compound - Organic cation - Aromatic heteropolycyclic compound
Description	This compound belongs to the class of organic compounds known as benzofuranones. These are organic compounds containing a benzene ring fused to a furanone.
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	488200560
Pubchem Sid Url	https://pubchem.ncbi.nlm.nih.gov/substance/488200560
IUPAC Name	sodium;4-[3-(4-hydroxy-3-methylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-2-methylphenolate
INCHI	InChI=1S/C21H18O5S.Na/c1-13-11-15(7-9-18(13)22)21(16-8-10-19(23)14(2)12-16)17-5-3-4-6-20(17)27(24,25)26-21;/h3-12,22-23H,1-2H3;/q;+1/p-1
InChIKey	FMKJVYROEYMYFV-UHFFFAOYSA-M
Smiles	CC1=C(C=CC(=C1)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C=C4)[O-])C)O.[Na+]
Isomeric SMILES	CC1=C(C=CC(=C1)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C=C4)[O-])C)O.[Na+]
WGK Germany	3
Molecular Weight	404.41
Reaxy-Rn	62524688
Reaxys-RN_link_address	https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=62524688&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.

10 results found

Lot Number	Certificate Type	Date	Item
F23061387	Certificate of Analysis	Mar 05, 2025	C121939
F23061410	Certificate of Analysis	Mar 05, 2025	C121939
K2406134	Certificate of Analysis	May 13, 2024	C121939
H2215179	Certificate of Analysis	May 13, 2024	C121939
H2213198	Certificate of Analysis	May 13, 2024	C121939
H2213197	Certificate of Analysis	May 13, 2024	C121939
A2214400	Certificate of Analysis	Jan 12, 2024	C121939
A2214403	Certificate of Analysis	Oct 08, 2023	C121939
A2214402	Certificate of Analysis	Oct 08, 2023	C121939
A2214404	Certificate of Analysis	Dec 04, 2021	C121939

Chemical and Physical Properties

Molecular Weight	404.400 g/mol
XLogP3
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	5
Rotatable Bond Count	2
Exact Mass	404.069 Da
Monoisotopic Mass	404.069 Da
Topological Polar Surface Area	95.000 Å²
Heavy Atom Count	28
Formal Charge	0
Complexity	650.000
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	1
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
The total count of all stereochemical bonds	0
Covalently-Bonded Unit Count	2

Solution Calculators

Molarity Calculator

Determine the necessary mass, volume, or concentration for preparing a solution.

Mass

Concentration

Volume

M. Wt*

g/mol

*When preparing stock solutions, always use the batch-specific molecular weight of the product found on the vial label and the Certificate of Analysis (available online).

Dilution Calculator

Determine the dilution needed to prepare a stock solution.

Concentration 1 (C1)

Volume 1 (V1)

Concentration 2 (C2)

Volume 2 (V2)

Reconstitution Calculator

The reconstitution calculator enables you to quickly determine the volume of a reagent needed to reconstitute your vial. Just enter the mass of the reagent and the target concentration, and the calculator will do the rest.

Volume (to add to vial)

Mass (in vial)

Desired Reconstitution Concentration