4-Bromoisobenzofuran-1,3-dione CAS 82-73-5
| CAS No. | 82-73-5 |
| Molecular Formula | C8H3BrO3 |
| Molecular Weight | 227.01 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Bromoisobenzofuran-1,3-dione (CAS 82-73-5), a certified reference material (molecular formula C8H3BrO3, MW 227.01 g/mol) for analytical method development and quality control.
The molecular framework of 4-Bromoisobenzofuran-1,3-dione (C8H3BrO3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Bromoisobenzofuran-1,3-dione meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H3BrO3 |
| Molecular Weight | 227.01 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
Related Bromoisobenzofuran Standards
Recommended Standards
- 4-Bromo-3-(difluoromethoxy)-1-methyl-1H-pyrazole (CAS 2665661-07-2)
- 5-Bromo-2-cyanonicotinic acid (CAS 914637-97-1)
- 4-Bromo-2-nitrobenzonitrile (CAS 79603-03-5)
- 5-Bromo-2-nitrobenzonitrile, 97% (CAS 89642-50-2)
- 2-((5-(4-(Tert-butyl)phenyl)-1,3,4-oxadiazol-2-yl)thio)acetic acid (CAS 332871-60-0)
- 2H-Isoxazolo[4,5-f]isoindole (CAS 118716-69-1)
- N-[3-Fluoro-4-(morpholin-4-yl)phenyl]-2-(phenylsulfanyl)acetamide (CAS 866136-84-7)
- 10-(4-Methoxyphenyl)-14,14-dimethyl-2,9-diazatricyclo[9.4.0.0^{3,8}]pentadeca-1(11),3,5,7-tetraen-12-one; methanol (CAS 1823182-27-9)
- Brinzolamide Impurity 9 (CAS CATO-C4X-19409)
- 2-Isopropoxypyrimidine-5-boronic Acid (CAS 870521-32-7)
- 4-(1H-Imidazol-1-yl)-2-nitropyridine (CAS 1823945-05-6)
- Cyclohexyl hexanoate (CAS 6243-10-3)
- 3-(2,5-Difluorobenzyl)pyrrolidine (CAS 1100640-03-6)
- Semaglutide Impurity 10 (CAS CATO-C4X-222610)
Why CATO?
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