4,7-Dibromo-2,3-dihydro-1h-indole-2,3-dione CAS 20780-89-6
| CAS No. | 20780-89-6 |
| Molecular Formula | C8H3Br2NO2 |
| Molecular Weight | 304.92 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4,7-Dibromo-2,3-dihydro-1h-indole-2,3-dione under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
4,7-Dibromo-2,3-dihydro-1h-indole-2,3-dione (CAS 20780-89-6) is a high-purity analytical reference standard with the molecular formula C8H3Br2NO2 and a molecular weight of 304.92 g/mol.
Structurally, 4,7-Dibromo-2,3-dihydro-1h-indole-2,3-dione (C8H3Br2NO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 304.92 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H3Br2NO2 |
| Molecular Weight | 304.92 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.) | 1962 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- (S-methylsulfonimidoyl)methane (CAS 1520-31-6)
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- 3,5-Dimethylpiperidine-1-carboximidamide (CAS 774561-45-4)
- 1-(4-Bromobutoxy)-3-nitrobenzene (CAS 31191-44-3)
- 3-(Aminomethyl)-2-bromo-5-(difluoromethyl)pyridin-4-amine (CAS 1806886-78-1)
- 2-Isobutoxynaphthalene (CAS 2173-57-1)
- 3-Methyl-5,6,7,8-tetrahydroquinoline 1-oxide (CAS 60169-87-1)
- 2,2-Dimethyl-N-((4-methylthiazol-2-yl)methyl)thietan-3-amine (CAS 1879597-08-6)
- 2-Chloro-1-(2,4,5-Trifluorophenyl)Ethanone (CAS 129604-31-5)
- Des-His(1)-Semaglutide (CAS CATO-C4X-2226216)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com