3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid
3-(3-甲基-5-氧代-4,5-二氢-1H-吡唑-1-基)苯磺酸
Also known as: 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone, 1-(3-Sulfophenyl)-3-methyl-2-pyrazolin-5-one, 1-(M-SULFOPHENYL)-3-METHYL-5-PYRAZOLONE, 3-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonic acid, 3-(5-keto-3-methyl-4H-pyrazol-1-yl)benzenesulfonic acid, 3-Methyl-1-(3-sulfophenyl)-2-pyrazolin-5-one, Benzenesulfonic acid, 3-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)-, Benzenesulfonic acid,m-(3-methyl-5-oxo-2-pyrazolin-1-yl), m-(4,5-dihydro-3-methyl-5-oxo-1H-pyrazol-1-yl)benzenesulfonic acid
3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid (CAS 119-17-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H10N2O4S and a molecular weight of 254.26200 g/mol. It is also known as 1-(3-Sulfophenyl)-3-methyl-5-pyrazolone, 1-(3-Sulfophenyl)-3-methyl-2-pyrazolin-5-one and 1-(M-SULFOPHENYL)-3-METHYL-5-PYRAZOLONE. Key properties include a melting point of 335 °C(lit.) and a density of 1.53 g/cm3. It is classified under GHS with signal word Warning and hazard statements H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 119-17-5
- Jingsj CID
- J-1993258-7
- Molecular Formula
- C10H10N2O4S
- Chinese Name
- 3-(3-甲基-5-氧代-4,5-二氢-1H-吡唑-1-基)苯磺酸
- Molecular Weight
- 254.26200 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 335 °C(lit.) |
|---|---|
| Density | 1.53 g/cm3 |
| Exact Mass | 254.03600 |
| PSA | 95.42000 |
| LogP | 1.62730 |
| Refractive Index | 1.633 |
GHS Safety & Compliance
- H317 — May cause an allergic skin reaction
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 3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid?
The CAS number of 3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid is 119-17-5.
What are the molecular formula and molecular weight of 3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid?
3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid has molecular formula C10H10N2O4S and molecular weight 254.26200 g/mol.
Is 3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid hazardous?
3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid has GHS signal word Warning and hazard statements H317 — May cause an allergic skin reaction.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-(3-methyl-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzenesulfonic acid (CAS 119-17-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993258-7 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.