4-Hydroxy-1H-indole-2-carboxylic acid

Also known as: 1H-Indole-2-carboxylic acid, 4-hydroxy-, 4-hydroxy-2-indolecarboxylic acid, F2158-0635

4-Hydroxy-1H-indole-2-carboxylic acid (CAS 80129-52-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H7NO3 and a molecular weight of 177.15700 g/mol. Key properties include a boiling point of 511.4ºC at 760 mmHg, a density of 1.57 g/cm3 and a flash point of 263.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 80129-52-8
Jingsj CID: J-1411288-0
Molecular Formula: C₉H₇NO₃
Molecular Weight: 177.15700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	511.4ºC at 760 mmHg
Density	1.57 g/cm3
Flash Point	263.1ºC
Exact Mass	177.04300
PSA	73.32000
LogP	1.57170

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 4-Hydroxy-1H-indole-2-carboxylic acid?

The CAS number of 4-Hydroxy-1H-indole-2-carboxylic acid is 80129-52-8.

What are the molecular formula and molecular weight of 4-Hydroxy-1H-indole-2-carboxylic acid?

4-Hydroxy-1H-indole-2-carboxylic acid has molecular formula C9H7NO3 and molecular weight 177.15700 g/mol.

What are the upstream and downstream products of 4-Hydroxy-1H-indole-2-carboxylic acid?

For 4-Hydroxy-1H-indole-2-carboxylic acid, Upstream Products: 4-(Benzyloxy)-1H-indole-2-carboxylic acid, Ethyl 4-(benzyloxy)-1H-indole-2-carboxylate, 2-(Benzyloxy)benzaldehyde.

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-Hydroxy-1H-indole-2-carboxylic acid (CAS 80129-52-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1411288-0 (accessed 2026-11-09).

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