Indicator bromocresol purple - 1% (w/v) in methanol (methanol) , CAS No.115-40-2

CAS: 115-40-2 Cat. No.: B196445 Formula: C21H16Br2O5S Molecular Weight: 540.22 EC Number: 204-087-8
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GRADE & PURITY 1% (w/v) in methanol (methanol)
Synonyms
4,4'-(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2-bromo-6-methylphenol) | MFCD00011681 | 4,4'-(3H-2,1-BENZOXATHIOL-3-YLIDENE)BIS(2-BROMO-6-METHYLPHENOL) S,S-DIOXIDE | 5,5'-Dibromo-o-cresolsulfonphthalein | DTXSID3059428 | Bromocresol Purple, Technical
Storage
Room temperature
Shipped In
Normal
★
Size
Germany (EU)
USA*
Price
Qty
500ml
B196445-500ml
1 In stock
2 In stock

€71.94

€104.91
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Why this grade

1% (w/v) in methanol (methanol) for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

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

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Quality documents

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

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Literature proof

Cited in 20 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
4,4'-(1,1-dioxido-3H-2,1-benzoxathiole-3,3-diyl)bis(2-bromo-6-methylphenol) | MFCD00011681 | 4,4'-(3H-2,1-BENZOXATHIOL-3-YLIDENE)BIS(2-BROMO-6-METHYLPHENOL) S,S-DIOXIDE | 5,5'-Dibromo-o-cresolsulfonphthalein | DTXSID3059428 | Bromocresol Purple, Technical
Specifications & Purity
1% (w/v) in methanol (methanol)
Storage
Room temperature
Shipped In
Normal
Names and Identifiers
Pubchem Sid528773028
Canonical SmilesCC1=CC(=CC(=C1O)Br)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C(=C4)C)O)Br
IUPAC Name2-bromo-4-[3-(3-bromo-4-hydroxy-5-methylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-6-methylphenol
InChIKeyABIUHPWEYMSGSR-UHFFFAOYSA-N
INCHI1S/C21H16Br2O5S/c1-11-7-13(9-16(22)19(11)24)21(14-8-12(2)20(25)17(23)10-14)15-5-3-4-6-18(15)29(26,27)28-21/h3-10,24-25H,1-2H3
Isomeric SMILES CC1=CC(=CC(=C1O)Br)C2(C3=CC=CC=C3S(=O)(=O)O2)C4=CC(=C(C(=C4)C)O)Br
Molecular Weight 540.22
Reaxy-Rn 359618
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=359618&ln=

Documentation

📋 Safety Data Sheet (SDS)

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

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✅ Certificate of Analysis (COA)

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

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassBenzofurans
SubclassBenzofuranones
Intermediate Tree Nodes Not available
Direct ParentBenzofuranones
Alternative Parents Phthalides  Benzoxathioles  Ortho cresols  O-bromophenols  Toluenes  Bromobenzenes  Organosulfonic acid esters  Aryl bromides  Oxacyclic compounds  Organooxygen compounds  Organobromides  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Benzofuranone - Phthalide - Benzoxathiole - 2-halophenol - 2-bromophenol - O-cresol - Bromobenzene - Halobenzene - Toluene - Phenol - Aryl bromide - Aryl halide - Monocyclic benzene moiety - Benzenoid - Organosulfonic acid ester - Organosulfonic acid or derivatives - Organic sulfonic acid or derivatives - Oxacycle - Organic oxygen compound - Hydrocarbon derivative - Organic oxide - Organohalogen compound - Organobromide - Organooxygen compound - Aromatic heteropolycyclic compound
DescriptionThis 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 organobromine compound - polyphenol - arenesulfonate ester - 2,1-benzoxathiole - sultone
3D Structure
Interactive Chemical Structure Model





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.

1 results found

Lot NumberCertificate TypeDateItem
C2207002Certificate of AnalysisJan 19, 2026 B196445
Chemical and Physical Properties
Melt Point(°C)245°C
Molecular Weight540.200 g/mol
XLogP35.100
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count5
Rotatable Bond Count2
Exact Mass539.906 Da
Monoisotopic Mass537.909 Da
Topological Polar Surface Area92.200 Ų
Heavy Atom Count29
Formal Charge0
Complexity680.000
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
Documents & Articles
Citations of This Product
Solution Calculators
Reviews

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