1-(4-Chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one
Also known as: 1-(4-Chlorophenyl)-3-hydroxypyrazole, 1-(4-Chlorophenyl)-1H-pyrazol-3-ol, 1-(4-Chlorophenyl)-1,2-dihydropyrazol-3-one, 1-(4-Chlorophenyl)-2H-pyrazolin-3-one, 2-(4-Chlorophenyl)-1H-pyrazol-5-one, 1-(4-Chlorophenyl)pyrazol-3-ol
1-(4-Chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one (CAS 76205-19-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7ClN2O and a molecular weight of 194.618 g/mol. Key properties include a melting point of 190-192ºC, a boiling point of 335.8±22.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 156.9±22.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 76205-19-1
- Jingsj CID
- J-1447365-0
- Molecular Formula
- C9H7ClN2O
- Molecular Weight
- 194.618 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 190-192ºC |
|---|---|
| Boiling Point | 335.8±22.0 °C at 760 mmHg |
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 156.9±22.3 °C |
| Exact Mass | 194.024689 |
| PSA | 38.05000 |
| LogP | 2.64 |
| Vapor Pressure | 0.0±0.8 mmHg at 25°C |
| Refractive Index | 1.641 |
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-Chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one?
The CAS number of 1-(4-Chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one is 76205-19-1.
What are the molecular formula and molecular weight of 1-(4-Chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one?
1-(4-Chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one has molecular formula C9H7ClN2O and molecular weight 194.618 g/mol.
What are the upstream and downstream products of 1-(4-Chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one?
For 1-(4-Chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one, Upstream Products: Cobalt(II) acetate, methyl propiolate, 4-Chlorophenylhydrazine; Downstream Products: Pyraclostrobin.
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-Chlorophenyl)-1,2-dihydro-3H-pyrazol-3-one (CAS 76205-19-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1447365-0 (accessed 2026-11-07).
Data for reference only; verify product details with suppliers before purchase.