5,6-dihydro-4-hydroxy-6-methyl-2H-pyran-2-one

Also known as: (±)-Gerberin aglycone, 2H-Pyran-2-one, 5,6-dihydro-4-hydroxy-6-methyl-, 4-Hydroxy-5,6-dihydro-6-methyl-2H-pyran-2-one, 4-Hydroxy-6-methyl-5,6-dihydro-2-pyranone, 4-Hydroxy-6-methyl-5,6-dihydro-2h-pyran-2-one, 4-hydroxy-2-methyl-2,3-dihydropyran-6-one, 4-hydroxy-5,6-dihydro-6-methyl-2-pyrone, 4-hydroxy-6-methyl-5,6-dihydro-2H-pyran-2-one, 5,6-Dihydro-4-hydroxy-6-methyl-2-pyrone, 5,6-Dihydro-4-hydroxy-6-methyl-2H-pyran-2-one, MFCD00012356

5,6-dihydro-4-hydroxy-6-methyl-2H-pyran-2-one (CAS 33177-29-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C6H8O3 and a molecular weight of 128.12600 g/mol. Key properties include a melting point of 126-128ºC(lit.), a boiling point of 201.5ºC at 760mmHg, a density of 1.252g/cm3 and a flash point of 83.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 33177-29-6
Jingsj CID: J-22054-2
Molecular Formula: C₆H₈O₃
Molecular Weight: 128.12600 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	126-128ºC(lit.)
Boiling Point	201.5ºC at 760mmHg
Density	1.252g/cm3
Flash Point	83.1ºC
Exact Mass	128.04700
PSA	46.53000
LogP	0.76370
Refractive Index	1.512

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 5,6-dihydro-4-hydroxy-6-methyl-2H-pyran-2-one?

The CAS number of 5,6-dihydro-4-hydroxy-6-methyl-2H-pyran-2-one is 33177-29-6.

What are the molecular formula and molecular weight of 5,6-dihydro-4-hydroxy-6-methyl-2H-pyran-2-one?

5,6-dihydro-4-hydroxy-6-methyl-2H-pyran-2-one has molecular formula C6H8O3 and molecular weight 128.12600 g/mol.

What are the upstream and downstream products of 5,6-dihydro-4-hydroxy-6-methyl-2H-pyran-2-one?

For 5,6-dihydro-4-hydroxy-6-methyl-2H-pyran-2-one, Upstream Products: 4-Hydroxy-6-methyl-2-pyrone; Downstream Products: delta-Hexalactone, 3-Penten-2-one.

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. "5,6-dihydro-4-hydroxy-6-methyl-2H-pyran-2-one (CAS 33177-29-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-22054-2 (accessed 2026-11-09).

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