o-Cresolphthalein, AR

Name: o-Cresolphthalein, AR
Brand: Vaqora Chemicals
SKU: VQ-045992

About o-Cresolphthalein, AR

Vaqora Chemicals supplies o-Cresolphthalein (AR grade), a biological stain registered under CAS number 596-27-0. The compound has the formula C22H18O4, corresponding to a molecular weight of 346.4 g/mol. The IUPAC name is 3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one. Common synonyms include Cresolphthalein and 3,3'-Dimethylphenolphthalein.

Store sealed in a dry, well-ventilated location away from incompatible materials. Good laboratory practice and suitable PPE are recommended during handling.

Key uses span histology and cytology staining, microscopy and clinical laboratories. It is used across academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Available in 5 g and 25 g packs, o-Cresolphthalein is dispatched with a Certificate of Analysis (COA) to destinations worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request. Custom pack sizes, bulk quantities and specific analytical data can be arranged on request.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	o-Cresolphthalein, AR
Catalogue No.	VQ-045992
CAS Number	596-27-0
IUPAC name	3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one
Molecular formula	C₂₂H₁₈O₄
Molecular weight	346.4 g/mol
Exact mass	346.1205
Grade	AR
HSN code	29349900
InChIKey	CPBJMKMKNCRKQB-UHFFFAOYSA-N
SMILES	CC1=C(C=CC(=C1)C2(C3=CC=CC=C3C(=O)O2)C4=CC(=C(C=C4)O)C)O
PubChem CID	68995

Physical properties
Physical form	Other
LogP (XLogP3)	4.5
H-bond donors / acceptors	2 / 4
TPSA	66.8 Å²
Synonyms	Cresolphthalein, 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)-, 3,3'-Dimethylphenolphthalein, 3,3-Bis(4-hydroxy-3-methylphenyl)isobenzofuran-1(3H)-one, 3',3''-Dimethylphenolphthalein, Phenolphthalein, 3',3''-dimethyl-, AO/854, 3,3-bis(4-hydroxy-3-methylphenyl)-3-hydroisobenzofuran-1-one, 3,3-Bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranone, 3,3-bis(4-hydroxy-3-methyl-phenyl)isobenzofuran-1-one, O-Cresolphthalein indicator (8.2-9.8), 3,3-Bis(4-hydroxy-3-methylphenyl)isobenzofuran-1-one

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 596-27-0

o-Cresolphthalein

CAS: 596-27-0
Formula: C₂₂H₁₈O₄
MW: 346.4 g/mol

VQ-000660

Frequently asked questions

What is the CAS number of o-Cresolphthalein, AR?

The CAS Registry Number of o-Cresolphthalein, AR is 596-27-0. It is also known as Cresolphthalein, 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxy-3-methylphenyl)-, 3,3'-Dimethylphenolphthalein.

What is the molecular formula and molecular weight of o-Cresolphthalein, AR?

o-Cresolphthalein, AR has the molecular formula C22H18O4 and a molecular weight of 346.4 g/mol. Its IUPAC name is 3,3-bis(4-hydroxy-3-methylphenyl)-2-benzofuran-1-one.

Which grade and pack sizes of o-Cresolphthalein, AR can I order?

We supply o-Cresolphthalein, AR in AR grade, in 5 g, 25 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with o-Cresolphthalein, AR?

Yes. Every lot of o-Cresolphthalein, AR is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can o-Cresolphthalein, AR be shipped internationally?

Yes. We export o-Cresolphthalein, AR worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.