3-Bromophthalic anhydride - ≥98% , CAS No.82-73-5

CAS: 82-73-5 Cat. No.: B186791 Molecular Weight: 227 EC Number: 676-366-6
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
bromophthalic anhydride | FS-2185 | 4-bromo-2-benzofuran-1,3-dione | B4061 | 4-bromo-1,3-dihydro-2-benzofuran-1,3-dione | Bromophtalic anhydride | SY010203 | 3-Bromophthalic anhydride | AKOS015920235 | 4-bromo-isobenzofuran-1,3-dione | 4-Bromoisobenzofura
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
B186791-1g
3

$9.90

$14.90
Save $5.00 (33.56%)
5g
B186791-5g
2

$29.90

$44.90
Save $15.00 (33.41%)
25g
B186791-25g
1

$123.90

$185.90
Save $62.00 (33.35%)
100g
B186791-100g
3

$352.90

$529.90
Save $177.00 (33.40%)
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Why this grade

≥98% 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 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
bromophthalic anhydride | FS-2185 | 4-bromo-2-benzofuran-1, 3-dione | B4061 | 4-bromo-1, 3-dihydro-2-benzofuran-1, 3-dione | Bromophtalic anhydride | SY010203 | 3-Bromophthalic anhydride | AKOS015920235 | 4-bromo-isobenzofuran-1, 3-dione | 4-Bromoisobenzofura
Specifications & Purity
≥98%
Storage
Room temperature
Shipped In
Normal
Purity
≥98%
Names and Identifiers
Pubchem Sid488189604
Canonical SmilesC1=CC2=C(C(=C1)Br)C(=O)OC2=O
IUPAC Name4-bromo-2-benzofuran-1,3-dione
InChIKeyAQBFKBMMIDHCFS-UHFFFAOYSA-N
INCHI1S/C8H3BrO3/c9-5-3-1-2-4-6(5)8(11)12-7(4)10/h1-3H
Isomeric SMILES C1=CC2=C(C(=C1)Br)C(=O)OC2=O
Molecular Weight 227
Reaxy-Rn 135799
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=135799&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 ParentPhthalic anhydrides
Alternative Parents Isobenzofuranones  Dicarboxylic acids and derivatives  Benzenoids  Aryl bromides  Vinylogous halides  Carboxylic acid anhydrides  Oxacyclic compounds  Organooxygen compounds  Organobromides  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Phthalic anhydride - Phthalic_anhydride - Isobenzofuranone - Isocoumaran - Aryl bromide - Aryl halide - Dicarboxylic acid or derivatives - Benzenoid - Carboxylic acid anhydride - Vinylogous halide - Carboxylic acid derivative - Oxacycle - Organohalogen compound - Organic oxygen compound - Hydrocarbon derivative - Organic oxide - Organobromide - Organooxygen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as phthalic anhydrides. These are compounds containing a phthalic anhydride moiety (or a derivative thereof), which consists of a benzene fused to a furan-1,3-dione.
External Descriptors Not available
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.

12 results found

Lot NumberCertificate TypeDateItem
J2524200Certificate of AnalysisNov 05, 2025 B186791
K2224143Certificate of AnalysisSep 10, 2025 B186791
K2224228Certificate of AnalysisSep 10, 2025 B186791
K2224237Certificate of AnalysisSep 10, 2025 B186791
K2224297Certificate of AnalysisSep 10, 2025 B186791
K2224331Certificate of AnalysisSep 10, 2025 B186791
K2224334Certificate of AnalysisSep 10, 2025 B186791
K2224339Certificate of AnalysisSep 10, 2025 B186791
K2120088Certificate of AnalysisSep 06, 2024 B186791
K2120089Certificate of AnalysisSep 06, 2024 B186791
L2416276Certificate of AnalysisSep 06, 2024 B186791
L2416277Certificate of AnalysisSep 01, 2022 B186791

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Chemical and Physical Properties
Melt Point(°C)132-134℃
Molecular Weight227.010 g/mol
XLogP32.000
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count3
Rotatable Bond Count0
Exact Mass225.927 Da
Monoisotopic Mass225.927 Da
Topological Polar Surface Area43.400 Ų
Heavy Atom Count12
Formal Charge0
Complexity238.000
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
Citations of This Product
References
1. Shengjun Xu, Kuisuo Yang, Xiaojuan Wang, Kaiwen Ge, Huacheng Xu, Yijun Huang, Weizheng Zhang, Congjie Gao, Xueli Gao.  (2024)  Zwitterionic nanofiltration membrane with enhanced perm-selectivity and antifouling property via introducing acyl chloride monomer with rigid pyrrolidinyl group.  SEPARATION AND PURIFICATION TECHNOLOGY,      [PMID:] [10.1016/j.seppur.2024.129166]
2. Siyu Guo, Xueting Ren, Xijiao Ren, Jinming He, Huocheng Yang, Wei Zhou, Menghuan Li, Lulu Wang, Yan Hu, Zhong Luo.  (2026)  Supramolecular DNA Di-Tetrahedral Neoadjuvants Dynamically Prime Melanoma Microenvironment for Enhancing Radio-Immunotherapy Responses.  ADVANCED FUNCTIONAL MATERIALS,      [PMID:] [10.1002/adfm.202524385]
Solution Calculators
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