Bromophenol blue indicator - 0.04% , CAS No.115-39-9

CAS: 115-39-9 Cat. No.: B196455 Formula: C19H10Br4O5S Molecular Weight: 669.96 Beilstein Registry Number: 61698 EC Number: 204-086-2
AVAILABLE TO ORDER
GRADE & PURITY 0.04%
Synonyms
Bromophenol Blue, ACS reagent | Bromophenol Blue, ACS reagent, EP | bromophenol blue, sultone form | Tetrabromphenol Blue | CAS-115-39-9 | FT-0614001 | CHEBI:59424 | Bromophenol blue indicator (3.0-4.6) | 4,4'-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bi
Storage
Room temperature
Shipped In
Normal
★
Size
USA
Germany (EU)*
Price
Qty
125ml
B196455-125ml
2 In stock
—

$20.90

$24.90
Save $4.00 (16.06%)
500ml
B196455-500ml
1 In stock
1 In stock

$64.90

$75.90
Save $11.00 (14.49%)
Enter a quantity for the sizes you want to add.
🧪
Why this grade

0.04% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

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 108 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Bromophenol blue is useful as a tracking dye in electrophoresis, an industrial dye, a laboratory acid-base indicator and a biological stain. In gel electrophoresis it can be used as a color marker and as as a biological stain it can be used to stain proteins and nucleic acids. Bromophenol blue is an intermediate and is used as an acid-based indicator in the pH range of 3-4.6 where the color changes from yellow to blue.
An electrophoresis tracking dye also used as an acid-base indicator

Specifications

Synonyms
Bromophenol Blue, ACS reagent | Bromophenol Blue, ACS reagent, EP | bromophenol blue, sultone form | Tetrabromphenol Blue | CAS-115-39-9 | FT-0614001 | CHEBI:59424 | Bromophenol blue indicator (3.0-4.6) | 4,4'-(1,1-Dioxido-3H-2,1-benzoxathiol-3-ylidene)bi
Specifications & Purity
0.04%
Storage
Room temperature
Shipped In
Normal
Names and Identifiers
Pubchem Sid
Canonical Smiles
C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C(=C3)Br)O)Br)C4=CC(=C(C(=C4)Br)O)Br
IUPAC Name
2,6-dibromo-4-[3-(3,5-dibromo-4-hydroxyphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]phenol
InChIKey
UDSAIICHUKSCKT-UHFFFAOYSA-N
INCHI
1S/C19H10Br4O5S/c20-12-5-9(6-13(21)17(12)24)19(10-7-14(22)18(25)15(23)8-10)11-3-1-2-4-16(11)29(26,27)28-19/h1-8,24-25H
Isomeric SMILES
C1=CC=C2C(=C1)C(OS2(=O)=O)(C3=CC(=C(C(=C3)Br)O)Br)C4=CC(=C(C(=C4)Br)O)Br
WGK Germany
2
RTECS
SJ7453000
Molecular Weight
669.96
Beilstein
61698
Reaxy-Rn
61698
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=61698&ln=

Documentation

📋 Safety Data Sheet (SDS)

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

<<<<<<< HEAD Download SDS → ======= Download SDS → >>>>>>> release248-p3

✅ 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
ClassBenzofurans
SubclassBenzofuranones
Intermediate Tree Nodes Not available
Direct ParentBenzofuranones
Alternative Parents Phthalides  Benzoxathioles  O-bromophenols  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 - Bromobenzene - Phenol - Halobenzene - Aryl bromide - Aryl halide - Monocyclic benzene moiety - Benzenoid - Organosulfonic acid ester - Organosulfonic acid or derivatives - Organic sulfonic acid or derivatives - Oxacycle - Organooxygen compound - Organic oxygen compound - Hydrocarbon derivative - Organic oxide - Organobromide - Organohalogen 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 - phenols - arenesulfonate ester - 2,1-benzoxathiole - sultone
3D Structure
Interactive Chemical Structure Model





Mechanisms of Action
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.

2 results found

Lot NumberCertificate TypeDateItem
C1926052C1926052Certificate of AnalysisNov 06, 2026 B196455
B2511003B2511003Certificate of AnalysisFeb 12, 2025 B196455
Chemical and Physical Properties
Melt Point(°C)297°C
Molecular Weight670.000 g/mol
XLogP35.800
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count5
Rotatable Bond Count2
Exact Mass669.694 Da
Monoisotopic Mass665.698 Da
Topological Polar Surface Area92.200 Ų
Heavy Atom Count29
Formal Charge0
Complexity662.000
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
Methods of Lysate Preparation for Western Blotting
Standard Operating Procedure (SOP) for the Protein Tris–Glycine Electrophoresis System
Quick Reference Guide to “Blue” Reagents in Biological Experiments: Use Cases, Critical Control Points, and Selection Guidance
A Review of Ten Commonly Used Techniques for Detection, Quantification, and Interaction Analysis in Nucleic Acid Research
Agarose Precast Gels: Composition, Advantages, and Application Workflows for Standardized Nucleic Acid Electrophoresis Matrices
EMSA PAGE Precast Gels: Principle Alignment, Performance Advantages, and Application Scenarios
Structural Characteristics, Color-Change Mechanisms, and Application Selection of Triphenylmethane Dye-Type Indicators
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.