![Molecular structure of 4,9-Dibromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone (CAS 83204-68-6)](/images/chem_structures_svg/249/83204-68-6.svg)
4,9-Dibromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone
Also known as: 2,6-Dibromonaphthalene-1,4,5,8-tetracarboxylic dianhydride, 2,6-Dibromo-1,4,5,8-tetracarboxynaphthalenedianhydride, 4,9-Dibromo[2]benzopyrano[6,5,4-def][2]benzopyran-1,3,6,8-tetrone, NDI-2Br, M8120
4,9-Dibromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone (CAS 83204-68-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C14H2Br2O6 and a molecular weight of 425.97000 g/mol. Key property: a melting point of 350 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 83204-68-6
- Jingsj CID
- J-1182286-9
- Molecular Formula
- C14H2Br2O6
- Molecular Weight
- 425.97000 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 350 °C |
|---|---|
| Exact Mass | 423.82200 |
| PSA | 86.74000 |
| LogP | 2.98600 |
Customs & Trade Information
| HS Code | 2932999099 |
|---|---|
| Summary | 2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 4,9-Dibromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone?
The CAS number of 4,9-Dibromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone is 83204-68-6.
What are the molecular formula and molecular weight of 4,9-Dibromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone?
4,9-Dibromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone has molecular formula C14H2Br2O6 and molecular weight 425.97000 g/mol.
What are the upstream and downstream products of 4,9-Dibromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone?
For 4,9-Dibromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone, Upstream Products: 1,4,5,8-Naphthalenetetracarboxylic dianhydride, Pyrene, Dibromoisocyanuric acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4,9-Dibromoisochromeno[6,5,4-def]isochromene-1,3,6,8-tetraone (CAS 83204-68-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1182286-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.