Bromocresol purple - indicator , CAS No.115-40-2

CAS: 115-40-2 Cat. No.: B101194 Molecular Weight: 540.22 EC Number: 204-087-8
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GRADE & PURITY Indicator ? Indicator grade — characterized dye giving a defined color change at a known transition. Use to signal pH or titration endpoints visually.
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
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Size
Status
Price
Qty
5g
B101194-5g
10
$9.90
10g
B101194-10g
5
$19.90
25g
B101194-25g
10
$29.90
100g
B101194-100g
2
$69.90
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Why this grade

indicator Indicator 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
indicator
Storage
Room temperature
Shipped In
Normal
Grade
Indicator
Names and Identifiers
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.

30 results found

Lot NumberCertificate TypeDateItem
C2626161Certificate of AnalysisMar 27, 2026 B101194
C2604357Certificate of AnalysisMar 06, 2026 B101194
C2604359Certificate of AnalysisMar 06, 2026 B101194
C2604435Certificate of AnalysisMar 06, 2026 B101194
L2503065Certificate of AnalysisNov 20, 2025 B101194
K2514145Certificate of AnalysisNov 20, 2025 B101194
I2524053Certificate of AnalysisSep 29, 2025 B101194
K2222367Certificate of AnalysisApr 18, 2025 B101194
L2423123Certificate of AnalysisDec 31, 2024 B101194
L2423122Certificate of AnalysisDec 31, 2024 B101194
G2524065Certificate of AnalysisDec 31, 2024 B101194
K2425045Certificate of AnalysisNov 27, 2024 B101194
B2429062Certificate of AnalysisMar 13, 2024 B101194
F2301051Certificate of AnalysisOct 31, 2023 B101194
H2120121Certificate of AnalysisMay 12, 2023 B101194
H2120122Certificate of AnalysisMay 12, 2023 B101194
D2323888Certificate of AnalysisMay 09, 2023 B101194
E2304490Certificate of AnalysisMay 09, 2023 B101194
F2117014Certificate of AnalysisMar 15, 2023 B101194
F2117029Certificate of AnalysisMar 15, 2023 B101194
C2124130Certificate of AnalysisDec 15, 2022 B101194
L2210146Certificate of AnalysisDec 15, 2022 B101194
L2210150Certificate of AnalysisDec 15, 2022 B101194
L2210161Certificate of AnalysisDec 15, 2022 B101194
L2210152Certificate of AnalysisDec 15, 2022 B101194
L2210160Certificate of AnalysisDec 15, 2022 B101194
C2310633Certificate of AnalysisDec 15, 2022 B101194
K2222356Certificate of AnalysisNov 30, 2022 B101194
H2026242Certificate of AnalysisJun 24, 2022 B101194
A2217077Certificate of AnalysisJan 24, 2022 B101194

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Chemical and Physical Properties
SensitivityMoisture sensitive.
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
References
1. Jianli Zhou, Chuqi Tang, Shuliang Zou, Liangbo Lei, Yuangen Wu, Wenhua Yang, Jean Damascene Harindintwali, Jiang Zhang, Wenwen Zeng, Dan Deng, Manman Zhao, Xiaobin Yu, Xiaobo Liu, Shuyi Qiu, Nils Arneborg.  (2023)  Enhancement of pyranoanthocyanin formation in blueberry wine with non-Saccharomyces yeasts.  FOOD CHEMISTRY,      [PMID:37989022] [10.1016/j.foodchem.2023.137956]
2. Win T.T., Bo B., Malec P., Fu P..  (2021)  The effect of a consortium of Penicillium sp. and Bacillus spp. in suppressing banana fungal diseases caused by Fusarium sp. and Alternaria sp..  JOURNAL OF APPLIED MICROBIOLOGY,  131  (4): (1890-1908).  [PMID:33694313] [10.1111/jam.15067]
3. Chao Nan Zhu, Si Yu Zheng, Hao Nan Qiu, Cong Du, Miao Du, Zi Liang Wu, Qiang Zheng.  (2021)  Plastic-Like Supramolecular Hydrogels with Polyelectrolyte/Surfactant Complexes as Physical Cross-links.  MACROMOLECULES,      [PMID:] [10.1021/acs.macromol.1c00835]
4. Xiaoguang Ying, Jieyuan He, Xiao Li.  (2021)  Molecularly imprinted electrospun fiber membrane for colorimetric detection of hexanoic acid.  E-POLYMERS,  21  (1): (500-510).  [PMID:] [10.1515/epoly-2021-0049]
5. Junfan Niu, Gang Tang, Jingyue Tang, Jiale Yang, Zhiyuan Zhou, Yunhao Gao, Xi Chen, Yuyang Tian, Yan Li, Jianqiang Li, Yongsong Cao.  (2021)  Functionalized Silver Nanocapsules with Improved Antibacterial Activity Using Silica Shells Modified with Quaternary Ammonium Polyethyleneimine as a Bacterial Cell-Targeting Agent.  JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,      [PMID:34077226] [10.1021/acs.jafc.1c01930]
6. Kuikui Zhang, Jiaxue Zhang, Fenfang Wang, Desheng Kong.  (2021)  Stretchable and Superwettable Colorimetric Sensing Patch for Epidermal Collection and Analysis of Sweat.  ACS Sensors,      [PMID:34048231] [10.1021/acssensors.1c00316]
7. Yixuan Pan, Maohua Yang, Mei Zhang, Mingyan Jia.  (2019)  Rapid discrimination of commercial American ginseng and Asian ginseng according to diols composition using a colorimetric sensor array.  SENSORS AND ACTUATORS B-CHEMICAL,      [PMID:] [10.1016/j.snb.2019.05.029]
8. Xin Wang, Yao Wu, Guanwen Li, Jun Wu, XiaoBing Zhang, Qing Li, Baoping Wang, Jing Chen, Wei Lei.  (2018)  Ultrafast Ionizing Radiation Detection by p–n Junctions Made with Single Crystals of Solution-Processed Perovskite.  Advanced Electronic Materials,  (11): (1800237).  [PMID:] [10.1002/aelm.201800237]
9. Xinjiong Fan, Xiaolong Liu, Yuhuan Liu.  (2012)  The cloning and characterization of one novel metagenome-derived thermostable esterase acting on N-acylhomoserine lactones.  JOURNAL OF MOLECULAR CATALYSIS B-ENZYMATIC,      [PMID:] [10.1016/j.molcatb.2012.07.006]
10. Hanyu Cao, Rui Lin, Zhihe Long, Lili Xing, Xinyu Xue.  (2024)  A self-powered wireless sweat-analysis patch for real-time monitoring physiological status.  Nano Energy,      [PMID:] [10.1016/j.nanoen.2024.109411]
11. Yongqi Yin, Xisheng Zhang, Ho Ngoc Nam, Quan Manh Phung, Kuina Yuan, Boyuan Li, Fanyue Kong, Azhar Alowasheeira, Baoning Wang, Lin Li, Yusuke Yamauchi.  (2025)  Enhanced Efficiency and Stability of Tin Halide Perovskite Solar Cells Through MOF Integration.  Small,      [PMID:39865966] [10.1002/smll.202411346]
12. Chuqi Tang, Qiuya Gu, Xiwen Li, Wenhua Yang, Luan Hao, Xiaobo Liu, Xiaobin Yu, Hongxiang Zhou, Jianli Zhou.  (2024)  Hydroxycinnamate decarboxylase in Metschnikowia pulcherrima promotes the formation of vinylphenolic pyranoanthocyanins to enhance the color stability of blueberry wine.  LWT-FOOD SCIENCE AND TECHNOLOGY,      [PMID:] [10.1016/j.lwt.2024.116633]
13. Yuping Sun, Jianhui Wang, Qianying Lu, Jiaxue Zhang, Yanyan Li, Yushuang Pang, Cheng Yang, Qian Wang, Desheng Kong.  (2024)  Stretchable and Sweat-Wicking Patch for Skin-Attached Colorimetric Analysis of Sweat Biomarkers.  ACS Sensors,      [PMID:38447091] [10.1021/acssensors.3c02673]
14. Xiao Zhang, Sihao Li, Heng Liu, Anurak Wongta, Zhenlin Xu, Kai Zhou, Surat Hongsibsong.  (2025)  Isolation and Characterizations of Histamine- and Tyramine-Producing Strains Isolated from Fermented Soybean Food: Soy Sauce and Soybean Paste.  Foods,  14  (14): (2407).  [PMID:40724227] [10.3390/foods14142407]
15. Fang Li, Nuotong Shen, Limin Zhang, Chen Yang, Zijun Ma, Junhao Gao, Bing Li, Fengshan Shen, Weijun Kong.  (2025)  Skin-Conformal Multifunctional Microfluidic Colorimetric Detection Device for Multiplexed Sweat Analysis.  ACS Sensors,      [PMID:40746283] [10.1021/acssensors.5c01354]
16. Qingbin Li, Cen Zhang, Lingwei Xue, Binbin Wang, Yueyue Lv, Qingzhi Yan.  (2025)  Design and construction of electronic transport layer based on organic small molecule for inverted perovskite solar cells.  MATERIALS RESEARCH BULLETIN,      [PMID:] [10.1016/j.materresbull.2025.113471]
17. Chen Siwei, Huang Jialiang, Liu Heng, Zhang Xiao, Xu Ting, Luo Lin, Chen Sui, Xu Zhenlin, Zhou Kai.  (2025)  Isolation, characterization, and biotechnological application of novel glutaminase-producing Bacillus strain for quality enhancement in soy sauce.  Food Bioscience,      [PMID:] [10.1016/j.fbio.2025.107114]
18. Xin Zhang, Dapeng Li, Ke Jiang, Chao Zeng, Mi He, Xiancheng Ma, Chongshan Yang, Ling Li, Tao Wen.  (2026)  MOF-enhanced colorimetric sensor array for early detection of citrus infestation by Bactrocera dorsalis.  POSTHARVEST BIOLOGY AND TECHNOLOGY,      [PMID:] [10.1016/j.postharvbio.2026.114242]
19. Ming Chen, Qinglong Luo, Xiaolei Wang, Kaiyuan Shi.  (2026)  Electrolyte Engineering in Redox-Enhanced Electrochemical Capacitors with Zn Anodes: The Role of Colorimetric Indicators.  Nano-Micro Letters,      [PMID:41770466] [10.1007/s40820-026-02116-9]
20. Yuting Sun, Qingyuan Zhao, Xiaoying Yu, Aijun Li, Hitoshi Tamiaki, Shin-ichi Sasaki, Yanhui Wang, Xiao-Feng Wang.  (2026)  Chlorophyll Derivative Enables High-Performance Self-Powered Organic Photodetectors for Full-Color Imaging.  Journal of Physical Chemistry Letters,      [PMID:] [10.1021/acs.jpclett.6c00304]
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