4,5-Dibromo-2-methyl-3(2H)-pyridazinone
Also known as: 2-methyl-4,5-dibromo-3(2H)-pyridazinone, 3(2H)-Pyridazinone, 4,5-dibromo-2-methyl-, 4,5-dibromo-2-methyl-2H-pyridazin-3-one, 4,5-dibromo-2-methylpyridazin-3(2H)-one, 4,5-dibromo-2-methylpyridazin-3-one
4,5-Dibromo-2-methyl-3(2H)-pyridazinone (CAS 13645-74-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H4Br2N2O and a molecular weight of 267.906 g/mol. Key properties include a melting point of 120 °C, a boiling point of 236.9±50.0 °C at 760 mmHg, a density of 2.2±0.1 g/cm3 and a flash point of 97.1±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 13645-74-4
- Jingsj CID
- J-1449007-4
- Molecular Formula
- C5H4Br2N2O
- Molecular Weight
- 267.906 g/mol
- Category
- Ketones
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 120 °C |
|---|---|
| Boiling Point | 236.9±50.0 °C at 760 mmHg |
| Density | 2.2±0.1 g/cm3 |
| Flash Point | 97.1±30.1 °C |
| Exact Mass | 265.869019 |
| PSA | 34.89000 |
| LogP | 0.00 |
| Vapor Pressure | 0.0±0.5 mmHg at 25°C |
| Refractive Index | 1.679 |
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen 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 4,5-Dibromo-2-methyl-3(2H)-pyridazinone?
The CAS number of 4,5-Dibromo-2-methyl-3(2H)-pyridazinone is 13645-74-4.
What are the molecular formula and molecular weight of 4,5-Dibromo-2-methyl-3(2H)-pyridazinone?
4,5-Dibromo-2-methyl-3(2H)-pyridazinone has molecular formula C5H4Br2N2O and molecular weight 267.906 g/mol.
What are the upstream and downstream products of 4,5-Dibromo-2-methyl-3(2H)-pyridazinone?
For 4,5-Dibromo-2-methyl-3(2H)-pyridazinone, Upstream Products: 4,5-Dibromopyridazin-3-one, iodomethane; Downstream Products: 5-Amino-2-methyl-2,3-dihydropyridazin-3-one, 5-amino-4-bromo-2-methylpyridazin-3(2H)-one, 4-Bromo-5-hydroxy-2-methylpyridazin-3(2H)-one.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "4,5-Dibromo-2-methyl-3(2H)-pyridazinone (CAS 13645-74-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1449007-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.