4-Hydroxy-5,6-dimethyl-2H-pyran-2-one

Also known as: 4-Hydroxy-5,6-dimethylpyran-2-one, 4-Hydroxy-5,6-dimethyl-2-pyrone, 5,6-Dimethyl-4-hydroxy-2-pyrone, 5,6-Dimethyl-4-hydroxy-α-pyrone, 5,6-Dimethyl-4-hydroxy-2-oxo-2H-pyran, 6-Hydroxy-2,3-dimethyl-4-pyranone, 2,3-Dimethyl-6-oxidanyl-pyran-4-one, 2H-Pyran-2-one, 4-hydroxy-5,6-dimethyl-

4-Hydroxy-5,6-dimethyl-2H-pyran-2-one (CAS 50405-45-3) 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. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 50405-45-3
Jingsj CID: J-1064778-6
Molecular Formula: C₇H₈O₃
Molecular Weight: 140.13700 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	140.04700
PSA	50.44000
LogP	0.96220

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-Hydroxy-5,6-dimethyl-2H-pyran-2-one?

The CAS number of 4-Hydroxy-5,6-dimethyl-2H-pyran-2-one is 50405-45-3.

What are the molecular formula and molecular weight of 4-Hydroxy-5,6-dimethyl-2H-pyran-2-one?

4-Hydroxy-5,6-dimethyl-2H-pyran-2-one has molecular formula C7H8O3 and molecular weight 140.13700 g/mol.

What are the upstream and downstream products of 4-Hydroxy-5,6-dimethyl-2H-pyran-2-one?

For 4-Hydroxy-5,6-dimethyl-2H-pyran-2-one, Upstream Products: 3-Methyl-2,4-pentanedione, 2,4-Pentanedione, Methyl 3-oxovalerate.

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-Hydroxy-5,6-dimethyl-2H-pyran-2-one (CAS 50405-45-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1064778-6 (accessed 2026-11-09).

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