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5-butyl-5-ethyltetrahydro-2H-pyran-2-one

5-丁基-5-乙基四氢-2H-吡喃-2-酮

Also known as: 4-ETHYL-4-BUTYL-DELTA-VALEROLACTONE, 5-butyl-5-ethyloxan-2-one, COSTAULON, COSTAULON(TM), ETHYL BUTYL VALEROLACTONE, 2H-Pyran-2-one,5-butyl-5-ethyltetrahydro-, 2H-Pyran-2-one,5-butyl-5-ethyltetrahydro-(9CI)

5-butyl-5-ethyltetrahydro-2H-pyran-2-one (CAS 67770-79-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C11H20O2 and a molecular weight of 184.27500 g/mol. It is also known as 4-ETHYL-4-BUTYL-DELTA-VALEROLACTONE, 5-butyl-5-ethyloxan-2-one and COSTAULON. Key properties include a boiling point of 266.5ºC at 760 mmHg, a density of 0.918 g/cm3 and a flash point of 105.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
67770-79-0
Jingsj CID
J-1551828-0
Molecular Formula
C11H20O2
Chinese Name
5-丁基-5-乙基四氢-2H-吡喃-2-酮
Molecular Weight
184.27500 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point266.5ºC at 760 mmHg
Density0.918 g/cm3
Flash Point105.7ºC

Frequently Asked Questions

What is the CAS number of 5-butyl-5-ethyltetrahydro-2H-pyran-2-one?

The CAS number of 5-butyl-5-ethyltetrahydro-2H-pyran-2-one is 67770-79-0.

What are the molecular formula and molecular weight of 5-butyl-5-ethyltetrahydro-2H-pyran-2-one?

5-butyl-5-ethyltetrahydro-2H-pyran-2-one has molecular formula C11H20O2 and molecular weight 184.27500 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "5-butyl-5-ethyltetrahydro-2H-pyran-2-one (CAS 67770-79-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1551828-0 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.