3-Hydroxy-2,6-bis(hydroxymethyl)-4-pyrone

Also known as: 2,6-dihydroxymethyl-3-hydroxy-4-pyrone, 3-Hydroxy-2,6-bis(hydroxymethyl)-4H-pyran-4-one, 3-Hydroxy-2,6-bis-hydroxymethyl-pyran-4-one, 3-hydroxy-2,6-bis(hydroxymethyl)pyran-4-one, 4H-Pyran-4-one,3-hydroxy-2,6-bis(hydroxymethyl)-, Kojic Impurity 7

3-Hydroxy-2,6-bis(hydroxymethyl)-4-pyrone (CAS 2029-49-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C7H8O5 and a molecular weight of 172.13500 g/mol. Key properties include a melting point of 149 °C(dec.), a boiling point of 496.5ºC at 760 mmHg, a density of 1.583g/cm3 and a flash point of 213.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2029-49-4
Jingsj CID: J-16856-9
Molecular Formula: C₇H₈O₅
Molecular Weight: 172.13500 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	149 °C(dec.)
Boiling Point	496.5ºC at 760 mmHg
Density	1.583g/cm3
Flash Point	213.7ºC
Exact Mass	172.03700
PSA	90.90000
Vapor Pressure	6.15E-12mmHg at 25°C
Refractive Index	1.617

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-Hydroxy-2,6-bis(hydroxymethyl)-4-pyrone?

The CAS number of 3-Hydroxy-2,6-bis(hydroxymethyl)-4-pyrone is 2029-49-4.

What are the molecular formula and molecular weight of 3-Hydroxy-2,6-bis(hydroxymethyl)-4-pyrone?

3-Hydroxy-2,6-bis(hydroxymethyl)-4-pyrone has molecular formula C7H8O5 and molecular weight 172.13500 g/mol.

What are the upstream and downstream products of 3-Hydroxy-2,6-bis(hydroxymethyl)-4-pyrone?

For 3-Hydroxy-2,6-bis(hydroxymethyl)-4-pyrone, Upstream Products: kojic acid, Formaldehyde, Ethanol; Downstream Products: 3-hydroxy-4-oxopyran-2,6-dicarboxylic acid.

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-Hydroxy-2,6-bis(hydroxymethyl)-4-pyrone (CAS 2029-49-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16856-9 (accessed 2026-11-09).

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