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5-Methoxyisobenzofuran-1(3H)-one

Also known as: 5-Methoxy-1(3H)-isobenzofuranone, 5-Methoxy-3H-2-benzofuran-1-one, 5-Methoxy-3H-isobenzofuran-1-one, 1(3H)-Isobenzofuranone, 5-methoxy-, 5-METHOXY-3H-ISOBENZOFURAN-1-ONE, 5-methoxy-1-isobenzofuranone

5-Methoxyisobenzofuran-1(3H)-one (CAS 4741-62-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H8O3 and a molecular weight of 164.15800 g/mol. Key property: a boiling point of 370.6°C at 760 mmHg. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4741-62-2
Jingsj CID
J-1086524-4
Molecular Formula
C9H8O3
Molecular Weight
164.15800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point370.6°C at 760 mmHg
Exact Mass164.04700
PSA35.53000
LogP1.36560

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-Methoxyisobenzofuran-1(3H)-one?

The CAS number of 5-Methoxyisobenzofuran-1(3H)-one is 4741-62-2.

What are the molecular formula and molecular weight of 5-Methoxyisobenzofuran-1(3H)-one?

5-Methoxyisobenzofuran-1(3H)-one has molecular formula C9H8O3 and molecular weight 164.15800 g/mol.

What are the upstream and downstream products of 5-Methoxyisobenzofuran-1(3H)-one?

For 5-Methoxyisobenzofuran-1(3H)-one, Upstream Products: (2-Bromo-5-methoxyphenyl)methanol, 4-Methoxybenzoic acid, Dibromomethane; Downstream Products: 5-hydroxy-3H-isobenzofuran-1-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. "5-Methoxyisobenzofuran-1(3H)-one (CAS 4741-62-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1086524-4 (accessed 2026-11-09).

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