1,3,7,7-Tetramethyl-2-oxabicyclo[4.4.0]-5-decen-9-one

1,3,7,7-四甲基-2-氧杂双环[4.4.0]-5-癸烯-9-酮

Also known as: 2,5,5,8a-Tetramethyl-2,3,5,6,8,8a-hexahydro-7H-chromen-7-one, 1,3,7,7-Tetramethyl-9-oxo-2-oxabicyclo[4.4.0]dec-5-ene, 7H-1-Benzopyran-7-one, 2,3,5,6,8,8a-hexahydro-2,5,5,8a-tetramethyl-

1,3,7,7-Tetramethyl-2-oxabicyclo[4.4.0]-5-decen-9-one (CAS 20194-67-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C13H20O2 and a molecular weight of 208.297 g/mol. It is also known as 2,5,5,8a-Tetramethyl-2,3,5,6,8,8a-hexahydro-7H-chromen-7-one, 1,3,7,7-Tetramethyl-9-oxo-2-oxabicyclo[4.4.0]dec-5-ene and 7H-1-Benzopyran-7-one, 2,3,5,6,8,8a-hexahydro-2,5,5,8a-tetramethyl-. Key properties include a boiling point of 294.9±40.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 117.8±20.9 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20194-67-6
Jingsj CID
J-51319-9
Molecular Formula
C13H20O2
Chinese Name
1,3,7,7-四甲基-2-氧杂双环[4.4.0]-5-癸烯-9-酮
Molecular Weight
208.297 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point294.9±40.0 °C at 760 mmHg
Density1.0±0.1 g/cm3
Flash Point117.8±20.9 °C

Frequently Asked Questions

What is the CAS number of 1,3,7,7-Tetramethyl-2-oxabicyclo[4.4.0]-5-decen-9-one?

The CAS number of 1,3,7,7-Tetramethyl-2-oxabicyclo[4.4.0]-5-decen-9-one is 20194-67-6.

What are the molecular formula and molecular weight of 1,3,7,7-Tetramethyl-2-oxabicyclo[4.4.0]-5-decen-9-one?

1,3,7,7-Tetramethyl-2-oxabicyclo[4.4.0]-5-decen-9-one has molecular formula C13H20O2 and molecular weight 208.297 g/mol.

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

Last updated:

How to cite: Jingsj. "1,3,7,7-Tetramethyl-2-oxabicyclo[4.4.0]-5-decen-9-one (CAS 20194-67-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-51319-9 (accessed 2026-10-23).

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