4-Chromanone

Also known as: Chroman-4-one, 2,3-Dihydro-4H-chromen-4-one, 2,3-Dihydro-1-benzopyran-4-one, 4H-1-Benzopyran-4-one, 2,3-dihydro-, Isochromanone

4-Chromanone (CAS 491-37-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H8O2 and a molecular weight of 148.159 g/mol. Key properties include a melting point of 34-40ºC, a boiling point of 253.2±0.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 128.4±15.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 491-37-2
Jingsj CID: J-28524-5
Molecular Formula: C₉H₈O₂
Molecular Weight: 148.159 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	34-40ºC
Boiling Point	253.2±0.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	128.4±15.3 °C
Exact Mass	148.052429
PSA	26.30000
LogP	1.99
Vapor Pressure	0.0±0.5 mmHg at 25°C
Refractive Index	1.562

Customs & Trade Information

HS Code	2932999099
Summary	2932999099. 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 4-Chromanone?

The CAS number of 4-Chromanone is 491-37-2.

What are the molecular formula and molecular weight of 4-Chromanone?

4-Chromanone has molecular formula C9H8O2 and molecular weight 148.159 g/mol.

What are the upstream and downstream products of 4-Chromanone?

For 4-Chromanone, Upstream Products: CHROMAN, 4-Chromanol, Chromone; Downstream Products: 3,4-Dihydro-4-(iodomethyl)-2H-1-benzopyran, 3-Methoxyphenylmagnesium bromide, 7-Methoxy-1-indanone.

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-Chromanone (CAS 491-37-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28524-5 (accessed 2026-11-09).

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