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5-Hydroxybenzofuran-2-carboxylic acid

Also known as: 5-HYDROXY-1-BENZOFURAN-2-CARBOXYLIC ACID, 5-HYDROXY-BENZOFURAN-2-CARBOXYLIC ACID, 5-hydroxy-2-Benzofurancarboxylic acid, 2-Benzofurancarboxylic acid, 5-hydroxy-, 2-carboxy-5-hydroxybenzofuran, 5-Hydroxy-1-benzofuran-2-carboxylic acid, 5-hydroxy-benzofuran-2-carboxylic acid

5-Hydroxybenzofuran-2-carboxylic acid (CAS 56172-36-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H6O4 and a molecular weight of 178.14200 g/mol. Key property: a boiling point of 396.4±22.0°C at 760 mmHg. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
56172-36-2
Jingsj CID
J-1428652-3
Molecular Formula
C9H6O4
Molecular Weight
178.14200 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point396.4±22.0°C at 760 mmHg
Exact Mass178.02700
PSA70.67000
LogP1.83660

Customs & Trade Information

HS Code2932999099
Summary2932999099. other heterocyclic compounds with oxygen 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 5-Hydroxybenzofuran-2-carboxylic acid?

The CAS number of 5-Hydroxybenzofuran-2-carboxylic acid is 56172-36-2.

What are the molecular formula and molecular weight of 5-Hydroxybenzofuran-2-carboxylic acid?

5-Hydroxybenzofuran-2-carboxylic acid has molecular formula C9H6O4 and molecular weight 178.14200 g/mol.

What are the upstream and downstream products of 5-Hydroxybenzofuran-2-carboxylic acid?

For 5-Hydroxybenzofuran-2-carboxylic acid, Upstream Products: 5-Methoxybenzofuran-2-carboxylic acid, ethyl 5-methoxybenzofuran-2-carboxylate, 2,5-Dimethoxybenzaldehyde; Downstream Products: Methyl 5-hydroxybenzofuran-2-carboxylate, ethyl 5-hydroxybenzofuran-2-carboxylate.

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

Last updated:

How to cite: Jingsj. "5-Hydroxybenzofuran-2-carboxylic acid (CAS 56172-36-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1428652-3 (accessed 2026-11-09).

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