(4aR,6aS,9aS,9bS)-6a-methyloctahydrocyclopenta[f]chromene-3,7(2H,8H)-dione

Also known as: Sitolactone, delta-lactone, Cyclopenta[f][1]benzopyran-3,7-dione, decahydro-6a-methyl-, (4aR,6aS,9aS,9bS)-, Cyclopenta[f][1]benzopyran-3,7-dione, decahydro-6a-methyl-, [4aR-(4aα,6aα,9aβ,9bα)]-

(4aR,6aS,9aS,9bS)-6a-methyloctahydrocyclopenta[f]chromene-3,7(2H,8H)-dione (CAS 126784-20-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C13H18O3 and a molecular weight of 222.28000 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 126784-20-1
Jingsj CID: J-1925263-8
Molecular Formula: C₁₃H₁₈O₃
Molecular Weight: 222.28000 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Exact Mass	222.12600
PSA	43.37000
LogP	2.08740

Frequently Asked Questions

What is the CAS number of (4aR,6aS,9aS,9bS)-6a-methyloctahydrocyclopenta[f]chromene-3,7(2H,8H)-dione?

The CAS number of (4aR,6aS,9aS,9bS)-6a-methyloctahydrocyclopenta[f]chromene-3,7(2H,8H)-dione is 126784-20-1.

What are the molecular formula and molecular weight of (4aR,6aS,9aS,9bS)-6a-methyloctahydrocyclopenta[f]chromene-3,7(2H,8H)-dione?

(4aR,6aS,9aS,9bS)-6a-methyloctahydrocyclopenta[f]chromene-3,7(2H,8H)-dione has molecular formula C13H18O3 and molecular weight 222.28000 g/mol.

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. "(4aR,6aS,9aS,9bS)-6a-methyloctahydrocyclopenta[f]chromene-3,7(2H,8H)-dione (CAS 126784-20-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1925263-8 (accessed 2026-11-06).

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