2-phenyl-1H-indole-5-sulfonic acid

Also known as: 2-Phenylindole-5-sulfonic acid, 1H-Indole-5-sulfonic acid, 2-phenyl-, 2-Phenyl-5-indolesulfonic acid, 2-phenyl-1H-indole-5-sulfonic acid, 2-phenylindole-5-sulphonic acid, [2-PHENYL-INDOLE-5-SULFONIC ACID] PS ACID, PS ACID

2-phenyl-1H-indole-5-sulfonic acid (CAS 27391-34-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C14H11NO3S and a molecular weight of 273.30700 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 27391-34-0
Jingsj CID: J-1316595-2
Molecular Formula: C₁₄H₁₁NO₃S
Molecular Weight: 273.30700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	273.04600
PSA	78.54000
LogP	4.16240

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 2-phenyl-1H-indole-5-sulfonic acid?

The CAS number of 2-phenyl-1H-indole-5-sulfonic acid is 27391-34-0.

What are the molecular formula and molecular weight of 2-phenyl-1H-indole-5-sulfonic acid?

2-phenyl-1H-indole-5-sulfonic acid has molecular formula C14H11NO3S and molecular weight 273.30700 g/mol.

What are the upstream and downstream products of 2-phenyl-1H-indole-5-sulfonic acid?

For 2-phenyl-1H-indole-5-sulfonic acid, Upstream Products: Acetophenone, 4-Hydrazinobenzenesulfonic acid.

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. "2-phenyl-1H-indole-5-sulfonic acid (CAS 27391-34-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1316595-2 (accessed 2026-11-09).

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