1-(4-Nitrophenyl)-3-methyl-5-pyrazolone
Also known as: 5-Methyl-2-(4-nitrophenyl)-2,4-dihydro-3H-pyrazol-3-one, 1-(4-Nitrophenyl)-3-methyl-1H-pyrazol-5(4H)-one, 2,4-Dihydro-5-methyl-2-(4-nitrophenyl)-3H-pyrazol-3-one, 3-Methyl-1-(4-nitrophenyl)-5-pyrazolone, Coupler 2B
1-(4-Nitrophenyl)-3-methyl-5-pyrazolone (CAS 6402-09-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H9N3O3 and a molecular weight of 219.19700 g/mol. Key properties include a melting point of 220-225 °C, a boiling point of 387.9ºC at 760 mmHg, a density of 1.373g/cm3 and a flash point of 188.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 6402-09-1
- Jingsj CID
- J-5089-5
- Molecular Formula
- C10H9N3O3
- Molecular Weight
- 219.19700 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 220-225 °C |
|---|---|
| Boiling Point | 387.9ºC at 760 mmHg |
| Density | 1.373g/cm3 |
| Flash Point | 188.4ºC |
| Exact Mass | 219.06400 |
| PSA | 78.49000 |
| LogP | 1.73120 |
| Refractive Index | 1.621 |
Customs & Trade Information
| HS Code | 2933199090 |
|---|---|
| Summary | 2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. 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 1-(4-Nitrophenyl)-3-methyl-5-pyrazolone?
The CAS number of 1-(4-Nitrophenyl)-3-methyl-5-pyrazolone is 6402-09-1.
What are the molecular formula and molecular weight of 1-(4-Nitrophenyl)-3-methyl-5-pyrazolone?
1-(4-Nitrophenyl)-3-methyl-5-pyrazolone has molecular formula C10H9N3O3 and molecular weight 219.19700 g/mol.
What are the upstream and downstream products of 1-(4-Nitrophenyl)-3-methyl-5-pyrazolone?
For 1-(4-Nitrophenyl)-3-methyl-5-pyrazolone, Upstream Products: 4-Nitrophenylhydrazine hydrochloride, Ethyl acetoacetate, tert-Butyl acetoacetate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-(4-Nitrophenyl)-3-methyl-5-pyrazolone (CAS 6402-09-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5089-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.