4-(1H-Pyrazol-1-yl)benzenesulfonic acid

Also known as: 4-(Pyrazol-1-yl)benzenesulfonic acid, 1-(4-Benzenesulfonic acid)pyrazole, Benzenesulfonic acid, 4-(1H-pyrazol-1-yl)-, 4-pyrazol-1-yl-benzenesulfonic acid

4-(1H-Pyrazol-1-yl)benzenesulfonic acid (CAS 18336-38-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8N2O3S and a molecular weight of 224.23600 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18336-38-4
Jingsj CID: J-1356905-6
Molecular Formula: C₉H₈N₂O₃S
Molecular Weight: 224.23600 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	224.02600
PSA	80.57000
LogP	2.19980

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 4-(1H-Pyrazol-1-yl)benzenesulfonic acid?

The CAS number of 4-(1H-Pyrazol-1-yl)benzenesulfonic acid is 18336-38-4.

What are the molecular formula and molecular weight of 4-(1H-Pyrazol-1-yl)benzenesulfonic acid?

4-(1H-Pyrazol-1-yl)benzenesulfonic acid has molecular formula C9H8N2O3S and molecular weight 224.23600 g/mol.

What are the upstream and downstream products of 4-(1H-Pyrazol-1-yl)benzenesulfonic acid?

For 4-(1H-Pyrazol-1-yl)benzenesulfonic acid, Upstream Products: 1-Phenylpyrazole.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4-(1H-Pyrazol-1-yl)benzenesulfonic acid (CAS 18336-38-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1356905-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.