o-Cresolphthalein - PH color range 8.2 (colorless) ~9.8 (red/purple) , CAS No.596-27-0

CAS: 596-27-0 Cat. No.: C580683 Peso molecular: 346.38 Beilstein Registry Number: 310554 Número EC: 209-881-8
Disponible para pedir
GRADE & PURITY PH color range 8.2 (colorless) ~9.8 (red/purple)
Synonyms
o-Cresolphthalein|596-27-0|1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)-|3,3-Bis(4-hydroxy-3-methylphenyl)isobenzofuran-1(3H)-one|3',3''-Dimethylphenolphthalein|3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one|Phenolphthalein, 3',3''-dime
Storage
Desiccated,Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Estado
Price
Qty
25g
C580683-25g
3
22,90US$
100g
C580683-100g
2
68,90US$
Enter a quantity for the sizes you want to add.
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Why this grade

PH color range 8.2 (colorless) ~9.8 (red/purple) for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Desiccated,Room temperature Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 5 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Descripción general

Soluble in ethanol, ether and glacial acetic acid, purple in dilute alkali, slightly soluble in water and hardly soluble in benzene.
O-Cresolphthalein has been used as a component in calcifying media for calcification assay.

Specifications

Sinónimos
o-Cresolphthalein | 596-27-0 | 1(3H)-Isobenzofuranone, 3, 3-bis(4-hydroxy-3-methylphenyl)- | 3, 3-Bis(4-hydroxy-3-methylphenyl)isobenzofuran-1(3H)-one | 3', 3''-Dimethylphenolphthalein | 3, 3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one | Phenolphthalein, 3', 3''-dime
Especificaciones y pureza
PH color range 8.2 (colorless) ~9.8 (red/purple)
Mecanismos bioquímicos y fisiológicos
O-cresol phthalein is a reversible pH indicator. The kinetics of the reverse path (red-purple to colorless) is slow, which makes it an appropriate molecule to check the flow pattern in corrugated wall tubes. It is also used for colorimetric determination
Condiciones de almacenamiento de almacenamiento
Desiccated, Room temperature
Enviado en
Normal
Nombres e identificadores
Sonrisas canónicasCC1=C(C=CC(=C1)C2(C3=CC=CC=C3C(=O)O2)C4=CC(=C(C=C4)O)C)O
IUPAC Name3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one
InChIKeyCPBJMKMKNCRKQB-UHFFFAOYSA-N
INCHI1S/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
Isómeros SMILES CC1=C(C=CC(=C1)C2(C3=CC=CC=C3C(=O)O2)C4=CC(=C(C=C4)O)C)O
WGK Alemania 3
Peso molecular 346.38
Beilstein 310554
Reaxy-Rn 310554
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=310554&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClaseBenzofurans
SubclassBenzofuranones
Intermediate Tree Nodes Not available
Direct ParentBenzofuranones
Alternative Parents Phthalides  Ortho cresols  Toluenes  1-hydroxy-2-unsubstituted benzenoids  Lactones  Carboxylic acid esters  Oxacyclic compounds  Monocarboxylic acids and derivatives  Organooxygen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Benzofuranone - Phthalide - Isobenzofuranone - Isocoumaran - O-cresol - 1-hydroxy-2-unsubstituted benzenoid - Phenol - Toluene - Monocyclic benzene moiety - Benzenoid - Lactone - Carboxylic acid ester - Oxacycle - Monocarboxylic acid or derivatives - Carboxylic acid derivative - Hydrocarbon derivative - Organooxygen compound - Organic oxide - Organic oxygen compound - Aromatic heteropolycyclic compound
DescripciónThis 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
Estructura 3D
Modelo de Estructura Química Interactiva





Objetivos asociados (humanos)
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EHMT2 Tchem Histone-lysine N-methyltransferase, H3 lysine-9 specific 3 (93046 Activities)
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BAZ2B Tchem Bromodomain adjacent to zinc finger domain protein 2B (56204 Activities)
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IDH1 Tclin Isocitrate dehydrogenase [NADP] cytoplasmic (40980 Activities)
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RAPGEF4 Tchem Rap guanine nucleotide exchange factor 4 (11476 Activities)
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Objetivos asociados (no humanos)
Plasmodium falciparum (966862 Activities)
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Mecanismos de acción
Certificados (CoA, COO, BSE/TSE y tabla de análisis)
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.

2 results found

Lot NumberCertificate TypeFechaArticulo
H2307795Certificate of AnalysisAug 11, 2023 C580683
H2307803Certificate of AnalysisAug 11, 2023 C580683
Propiedades químicas y físicas
Punto de fusión (°C)223-225°C
Peso molecular346.400 g/mol
XLogP34.500
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count4
Rotatable Bond Count2
Exact Mass346.121 Da
Monoisotopic Mass346.121 Da
Topological Polar Surface Area66.800 Ų
Heavy Atom Count26
Formal Charge0
Complexity506.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Preguntas frecuentes y artículos
Citations of This Product
Referencias
1. Fan Yang, Hongbo Yu, Chunzheng Wu, Shiwei Wang, Tong Li, Hongfeng Yin.  (2022)  RhCu Bimetallic Nanoparticles in Hollow Carbon Spheres for Catalytic Halonitrobenzene Chemoselective Hydrogenation.  ACS Applied Nano Materials,      [PMID:] [10.1021/acsanm.2c02358]
2. Yongmei Tang, Lan Li, Kai Ma, Guofei Chen, Wei Wang, Xingzhong Fang.  (2018)  Transparent and organosoluble cardo polyimides with different trans/cis ratios of 1,4-diaminocyclohexane via aromatic nucleophilic substitution polymerization.  POLYMER INTERNATIONAL,  67  (5): (598-605).  [PMID:] [10.1002/pi.5556]
3. Nafeesa Mushtaq, Lala Rukh Sidra, Guofei Chen, Yongmei Tang, Lubo Xu, Xingzhong Fang.  (2017)  Synthesis of cardo containing asymmetric poly(ether-naphthalimide-phthalimide)s.  POLYMER INTERNATIONAL,  66  (11): (1633-1639).  [PMID:] [10.1002/pi.5425]
4. Leiduan Hao, Yanfei Zhao, Bo Yu, Hongye Zhang, Huanjun Xu, Jilei Xu, Zhimin Liu.  (2014)  Polyurea-supported metal nanocatalysts: Synthesis, characterization and application in selective hydrogenation of o-chloronitrobenzene.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:24767496] [10.1016/j.jcis.2014.03.015]
5. Xuexia Li, Thumawadee Wongwirat, Linqi Li, Yuan Xi, Junji Wei, Lei Zhu.  (2025)  Dipole Glass Polymer with High Dielectric Constant Based on Side Chain Functionalized Poly(ether ether ketone).  ACS Applied Polymer Materials,      [PMID:] [10.1021/acsapm.4c03621]
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