CAS 596-27-0

Cresolphthalein

Description:

Cresolphthalein, with the CAS number 596-27-0, is an organic compound commonly used as a pH indicator in various chemical applications. It appears as a white to pale yellow crystalline powder and is soluble in alcohol and ether but only slightly soluble in water. Cresolphthalein exhibits a color change from colorless to pink as the pH of a solution increases, typically transitioning around a pH range of 8.2 to 9.8, making it useful for determining the acidity or basicity of a solution. The compound is derived from phenolphthalein and is characterized by its ability to form a colored complex with metal ions, which can also be utilized in complexometric titrations. In addition to its role in laboratory settings, cresolphthalein is also employed in various industrial applications, including the formulation of dyes and as a reagent in analytical chemistry. However, it is important to handle this compound with care, as it may pose health risks if ingested or inhaled.

Formula: C₂₂H₁₈O₄

InChI: InChI=1S/C22H18O4/c1-13-11-15(7-9-19(13)23)22(16-8-10-20(24)14(2)12-16)18-6-4-3-5-17(18)21(25)26-22/h3-12,23-24H,1-2H3

InChI key: InChIKey=CPBJMKMKNCRKQB-UHFFFAOYSA-N

SMILES: O=C1OC(C=2C1=CC=CC2)(C3=CC(C)=C(O)C=C3)C4=CC(C)=C(O)C=C4

Synonyms:

• 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)-
• 3,3-Bis(3-methyl-4-hydroxyphenyl)phthalide
• 3,3-Bis(4-Hydroxy-M-Tolyl)Phthalide
• 3,3-Bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranone
• 3,3-Bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one
• 3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1(3H)-one
• Cresolphthalein
• Ortho-Cresolphthalein
• Phenolphthalein, 3′,3′′-dimethyl-
• o-Cresolphalein
• o-Cresolphthalein

o-Cresolphthalein

CAS: 596-27-0

Formula: C₂₂H₁₈O₄

Color and Shape: White to Light yellow to Light orange powder to crystal

Molecular weight: 346.38

Ref: 3B-C0404

1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)-

CAS: 596-27-0

Formula: C₂₂H₁₈O₄

Purity: 93%

Color and Shape: Solid

Molecular weight: 346.3759

Ref: IN-DA00IAKQ

o-Cresolphthalein

CAS: 596-27-0

Formula: C₂₂H₁₈O₄

Color and Shape: White to tan powder

Molecular weight: 346.39

Ref: 7W-GT9187

o-Cresolphthalein

CAS: 596-27-0

o-Cresolphthalein

Purity: IND

Molecular weight: 346.38g/mol

Ref: 54-OR1014524

o-Cresolphthalein

CAS: 596-27-0

Formula: C₂₂H₁₈O₄

Purity: 95.0%

Color and Shape: Solid

Molecular weight: 346.382

Ref: 10-F460191

O-Cresolphthalein

CAS: 596-27-0

O-Cresolphthalein is a gadolinium chelate that is used as a contrast agent for magnetic resonance imaging (MRI) of the brain, spine, and joints. The gadolinium ion is bound to the cresol molecule, which has an attached hydroxyl group. This complex attaches to the phosphorous pentoxide and creates a precipitate of metal hydroxides in the presence of water and sodium carbonate. O-Cresolphthalein is also used in clinical pathology to measure glomerular filtration rate (GFR), which is important for diagnosing renal disease. MRI scans are used to diagnose osteogenic genes that are associated with bone diseases such as osteoporosis.

Formula: C₂₂H₁₈O₄

Purity: Min. 95 Area-%

Color and Shape: Powder

Molecular weight: 346.38 g/mol

Ref: 3D-FC30578

o-Cresolphthalein AR, 95%

CAS: 596-27-0

Formula: C₂₂H₁₈O₄

Purity: min. 95%

Color and Shape: Off - white, Crystalline powder

Molecular weight: 346.39

Ref: SR-29121

o-Cresolphthalein

CAS: 596-27-0

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 Sci

Formula: C₂₂H₁₈O₄

Color and Shape: White or cream to pale yellow, Powder

Molecular weight: 346.38

Ref: 02-A12899