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4-Hydroxyisobenzofuran-1(3H)-one

Also known as: 4-Hydroxyphthalide, 1(3H)-Isobenzofuranone, 4-hydroxy-, 4-Hydroxy-3H-isobenzofuran-1-one, 4-Hydroxy-phthalide

4-Hydroxyisobenzofuran-1(3H)-one (CAS 13161-32-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H6O3 and a molecular weight of 150.13100 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
13161-32-5
Jingsj CID
J-1188801-0
Molecular Formula
C8H6O3
Molecular Weight
150.13100 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Exact Mass150.03200
PSA46.53000
LogP1.06260

Customs & Trade Information

HS Code2932209090
Summary2932209090. other lactones. 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-Hydroxyisobenzofuran-1(3H)-one?

The CAS number of 4-Hydroxyisobenzofuran-1(3H)-one is 13161-32-5.

What are the molecular formula and molecular weight of 4-Hydroxyisobenzofuran-1(3H)-one?

4-Hydroxyisobenzofuran-1(3H)-one has molecular formula C8H6O3 and molecular weight 150.13100 g/mol.

What are the upstream and downstream products of 4-Hydroxyisobenzofuran-1(3H)-one?

For 4-Hydroxyisobenzofuran-1(3H)-one, Upstream Products: methyl 2-formyl-3-hydroxybenzoate, N,N-Diethyl-3-hydroxybenzamide, 3-Hydroxybenzoic acid; Downstream Products: 1-Hydroxyanthraquinone, 4-Methyl-2-benzofuran-1(3H)-one.

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

Last updated:

How to cite: Jingsj. "4-Hydroxyisobenzofuran-1(3H)-one (CAS 13161-32-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1188801-0 (accessed 2026-11-09).

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