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Methyl 1-oxo-1,3-dihydroisobenzofuran-5-carboxylate

Also known as: 5-Carbomethoxyphthalide, Methyl phthalide-5-carboxylate, 1-oxo-1,3-dihydro-isobenzofuran-5-carboxylic acid methyl ester, 1-oxo-phthalan-5-carboxylic acid methyl ester, 5-carbomethoxyphthalide, methyl 1-oxo-3H-2-benzofuran-5-carboxylate

Methyl 1-oxo-1,3-dihydroisobenzofuran-5-carboxylate (CAS 23405-32-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H8O4 and a molecular weight of 192.16800 g/mol. Key properties include a boiling point of 399.1ºC at 760 mmHg, a density of 1.334g/cm3 and a flash point of 213.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
23405-32-5
Jingsj CID
J-1035080-8
Molecular Formula
C10H8O4
Molecular Weight
192.16800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point399.1ºC at 760 mmHg
Density1.334g/cm3
Flash Point213.9ºC
Exact Mass192.04200
PSA52.60000
LogP1.14360
Vapor Pressure1.4E-06mmHg at 25°C
Refractive Index1.571

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 Methyl 1-oxo-1,3-dihydroisobenzofuran-5-carboxylate?

The CAS number of Methyl 1-oxo-1,3-dihydroisobenzofuran-5-carboxylate is 23405-32-5.

What are the molecular formula and molecular weight of Methyl 1-oxo-1,3-dihydroisobenzofuran-5-carboxylate?

Methyl 1-oxo-1,3-dihydroisobenzofuran-5-carboxylate has molecular formula C10H8O4 and molecular weight 192.16800 g/mol.

What are the upstream and downstream products of Methyl 1-oxo-1,3-dihydroisobenzofuran-5-carboxylate?

For Methyl 1-oxo-1,3-dihydroisobenzofuran-5-carboxylate, Upstream Products: methyl propiolate, mono-Methyl terephthalate, Dibromomethane.

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

Last updated:

How to cite: Jingsj. "Methyl 1-oxo-1,3-dihydroisobenzofuran-5-carboxylate (CAS 23405-32-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1035080-8 (accessed 2026-11-09).

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