3-Methoxy-2-methyl-4H-pyran-4-one

Also known as: 2-Methyl-3-methoxy-4H-pyran-4-one, 2-methyl-3-methoxy-4-pyrone, 2-methyl-3-methoxy-pyranone, 3-methoxy-2-methyl-4-pyranone, 3-methoxy-2-methyl-4-pyrone, 3-methoxy-2-methylpyran-4-one, Pantoprazole Impurity 40, MFCD14553191

3-Methoxy-2-methyl-4H-pyran-4-one (CAS 4780-14-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H8O3 and a molecular weight of 140.13700 g/mol. Key properties include a boiling point of 279.6ºC at 760 mmHg, a density of 1.14g/cm3 and a flash point of 113.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4780-14-7
Jingsj CID: J-1125048-9
Molecular Formula: C₇H₈O₃
Molecular Weight: 140.13700 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	279.6ºC at 760 mmHg
Density	1.14g/cm3
Flash Point	113.6ºC
Exact Mass	140.04700
PSA	39.44000
LogP	0.95680
Refractive Index	1.492

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 3-Methoxy-2-methyl-4H-pyran-4-one?

The CAS number of 3-Methoxy-2-methyl-4H-pyran-4-one is 4780-14-7.

What are the molecular formula and molecular weight of 3-Methoxy-2-methyl-4H-pyran-4-one?

3-Methoxy-2-methyl-4H-pyran-4-one has molecular formula C7H8O3 and molecular weight 140.13700 g/mol.

What are the upstream and downstream products of 3-Methoxy-2-methyl-4H-pyran-4-one?

For 3-Methoxy-2-methyl-4H-pyran-4-one, Upstream Products: Maltol, Dimethyl sulfate, iodomethane; Downstream Products: 4-Chloro-3-methoxy-2-methylpyridine, Formic Acid, Methoxyacetone.

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. "3-Methoxy-2-methyl-4H-pyran-4-one (CAS 4780-14-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1125048-9 (accessed 2026-11-09).

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