4-Methoxy-1,5-dihydro-2H-pyrrol-2-one

Also known as: 4-Methoxy-3-pyrrolin-2-one, 4-Methoxy-1,5-dihydropyrrol-2-one, 1,5-Dihydro-4-methoxy-2H-pyrrol-2-one, 2H-Pyrrol-2-one, 1,5-dihydro-4-methoxy-, MFCD00071564

4-Methoxy-1,5-dihydro-2H-pyrrol-2-one (CAS 69778-83-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H7NO2 and a molecular weight of 113.11500 g/mol. Key properties include a melting point of 129-132 °C(lit.), a boiling point of 349.6ºC at 760 mmHg, a density of 1.16 g/cm3 and a flash point of 165.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 69778-83-2
Jingsj CID: J-3588-1
Molecular Formula: C₅H₇NO₂
Molecular Weight: 113.11500 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	129-132 °C(lit.)
Boiling Point	349.6ºC at 760 mmHg
Density	1.16 g/cm3
Flash Point	165.2ºC
Exact Mass	113.04800
PSA	38.33000
Refractive Index	1.495

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen 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-Methoxy-1,5-dihydro-2H-pyrrol-2-one?

The CAS number of 4-Methoxy-1,5-dihydro-2H-pyrrol-2-one is 69778-83-2.

What are the molecular formula and molecular weight of 4-Methoxy-1,5-dihydro-2H-pyrrol-2-one?

4-Methoxy-1,5-dihydro-2H-pyrrol-2-one has molecular formula C5H7NO2 and molecular weight 113.11500 g/mol.

What are the upstream and downstream products of 4-Methoxy-1,5-dihydro-2H-pyrrol-2-one?

For 4-Methoxy-1,5-dihydro-2H-pyrrol-2-one, Upstream Products: Methyl (E)-4-chloro-3-methoxy-2-butenoate, Diazomethane, Pyrrolidine-2,4-dione; Downstream Products: 5-(1H-indol-2-yl)-3-methoxy-1H-pyrrole-2-carbaldehyde.

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-Methoxy-1,5-dihydro-2H-pyrrol-2-one (CAS 69778-83-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3588-1 (accessed 2026-11-09).

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