1,3-Isobenzofurandione, 4,5,6,7-tetrabromo-, polymer with 1,2-ethanediol and 2,5-furandione CAS 65682-26-0
| CAS No. | 65682-26-0 |
| Molecular Formula | C8Br4O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,3-Isobenzofurandione, 4,5,6,7-tetrabromo-, polymer with 1,2-ethanediol and 2,5-furandione (CAS 65682-26-0), molecular formula C8Br4O3C4H2O3C2H6O2 and molecular weight 623.83 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, a polycyclic aromatic system, 1,3-Isobenzofurandione, 4,5,6,7-tetrabromo-, polymer with 1,2-ethanediol and 2,5-furandione is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 623.83 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8Br4O3 C4H2O3 C2H6O2 |
| Molecular Weight | 623.83 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Br-containing |
Related Isobenzofurandione Standards
- 1,3-Isobenzofurandione, polymer with 2,2'-oxybis[ethanol] and 2,2,4-trimethyl-1,3-pentanediol, 2-ethylhexyl ester (CAS 102030-00-2)
- 1,3-Isobenzofurandione, polymer with 1,3-butanediol, 1,2-ethanediol and 2,5-furandione, reaction products with 3-(triethoxysilyl)-1-propanamine (CAS 102783-83-5)
- 1,3-Isobenzofurandione, 5,5'-[2,2,2-trifluoro-1-(trifluoromethyl)ethylidene]bis-, polymer with 4,4'-oxybis[benzenamine] and 4,4'-sulfonylbis[benzenamine] (CAS 103443-55-6)
- 1,3-Isobenzofurandione, 5,5'-[[1,1'-biphenyl]-4,4'-diylbis(oxy)]bis-, polymer with 1,3-isobenzofurandione and 4,4'-sulfonylbis[benzenamine] (CAS 125881-35-8)
- 1,3-Isobenzofurandione, 5,5'-carbonylbis-, polymer with 1,3-diisocyanatomethylbenzene and 1,1'-methylenebis[isocyanatobenzene] (CAS 152187-64-9)
- 1,3-Isobenzofurandione, polymer with 2,5-furandione and 1,2-propanediol (CAS 25037-66-5)
- 1,3-Isobenzofurandione, 5,5'-carbonylbis-, polymer with 4,4'-methylenebis[benzenamine] (CAS 25038-84-0)
- 1,3-Isobenzofurandione, 5,5'-carbonylbis-, polymer with 1,3-benzenediamine (CAS 25464-66-8)
Recommended Standards
- 2,3-Difluoro-4-methylbenzamide (CAS 261763-35-3)
- 5′-Bromo-2′-hydroxyacetophenone (CAS 1450-75-5)
- tert-Butyldiphenyl((3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)allyl)oxy)silane (CAS 521950-38-9)
- 3-[(2,3-dihydro-benzo[1,4]dioxine-6-carbonyl)-amino]-propionic acid 335212-81-2 (CAS 335212-81-2)
- 2-ethoxy-5-methylbenzene-1,4-diamine (CAS 2044902-33-0)
- 1-(3-(2-Phenoxyethyl)-1,2,4-oxadiazol-5-yl)ethan-1-amine (CAS 1039992-74-9)
- (2-Fluoro-5-(3-methylpiperidine-1-carbonyl)phenyl)boronic acid (CAS 2096338-09-7)
- Ethyl (2S,4R)-4-hydroxytetrahydro-2H-pyran-2-carboxylate (CAS 2565792-65-4)
- 6-acetyl-4-hydroxyquinoline-3-carboxylic acid (CAS 873969-88-1)
- Myristoyl Pentapeptide-4 (CAS 1392416-25-9)
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