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m-Cresol Purple

Catalog No. AAB2433814
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25 g
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Catalog No. AAB2433814 Supplier Thermo Scientific Chemicals Supplier No. B2433814
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Description

CAS: 2303-01-7 | C21H18O5S | 382.43 g/mol

m-Cresol Purple acts as a pH indicator dye. It plays an important role in spectrophotometric pH measurements. It operates in the pH ranges 1.2 - 2.8 (red to yellow) and 7.4 - 9.0 (yellow to violet). Further, it is employed to stain epithelial cells and proteins.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
m-Cresol Purple acts as a pH indicator dye. It plays an important role in spectrophotometric pH measurements. It operates in the pH ranges 1.2 - 2.8 (red to yellow) and 7.4 - 9.0 (yellow to violet). Further, it is employed to stain epithelial cells and proteins.

Solubility
Soluble in water and sodium hydroxide solution. Slightly soluble in alcohol.

Notes
Transition interval (acid): pH 1.2 (red) to pH 2.8 (yellow); (alkaline) pH 7.4 (yellow) to pH 9.0 (purple)Incompatible with strong oxidizing agents.

Chemical Identifiers

CAS 2303-01-7
Molecular Formula C21H18O5S
Molecular Weight (g/mol) 382.43
MDL Number MFCD00005871
InChI Key OLQIKGSZDTXODA-UHFFFAOYSA-N
Synonym m-Cresolsulfonephthalein
PubChem CID 73030
IUPAC Name 4-[3-(4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-3-methylphenol
SMILES CC1=C(C=CC(=C1)O)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=C(C=C(C=C4)O)C

Specifications

Beilstein 350314
Merck Index 14,2577
Solubility Information Soluble in water and sodium hydroxide solution. Slightly soluble in alcohol.
Quantity 25 g
Formula Weight 382.44
Chemical Name or Material m-Cresol Purple

Safety and Handling

EINECSNumber 218-960-6
TSCA Yes
Recommended Storage Ambient temperatures

RUO – Research Use Only