4-chloro-2,3-dihydro-1H-isoindol-1-one

Also known as: 4-chloro-1-isoindolinone, 4-chloroisoindolin-1-one, 4-chloro-2,3-dihydro-isoindol-1-one, 1H-Isoindol-1-one, 4-chloro-2,3-dihydro-

4-chloro-2,3-dihydro-1H-isoindol-1-one (CAS 871723-37-4) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H6ClNO and a molecular weight of 167.592 g/mol. Key properties include a boiling point of 432.9±45.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 215.6±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 871723-37-4
Jingsj CID: J-1504986-2
Molecular Formula: C₈H₆ClNO
Molecular Weight: 167.592 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	432.9±45.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	215.6±28.7 °C
Exact Mass	167.013794
PSA	29.10000
LogP	1.14
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.602

Customs & Trade Information

HS Code	2933790090
Summary	2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4-chloro-2,3-dihydro-1H-isoindol-1-one?

The CAS number of 4-chloro-2,3-dihydro-1H-isoindol-1-one is 871723-37-4.

What are the molecular formula and molecular weight of 4-chloro-2,3-dihydro-1H-isoindol-1-one?

4-chloro-2,3-dihydro-1H-isoindol-1-one has molecular formula C8H6ClNO and molecular weight 167.592 g/mol.

What are the upstream and downstream products of 4-chloro-2,3-dihydro-1H-isoindol-1-one?

For 4-chloro-2,3-dihydro-1H-isoindol-1-one, Upstream Products: Methyl 2-(bromomethyl)-3-chlorobenzoate.

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-chloro-2,3-dihydro-1H-isoindol-1-one (CAS 871723-37-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1504986-2 (accessed 2026-11-09).

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