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CAS 7787-20-4

CAS 7787-20-4 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 7787-20-4
CAS 7787-20-4PubChem CID 82229

(-)-Fenchone

(1R,4S)-fenchone is a fenchone that has (1R,4S)-stereochemistry. It is a constituent of the essential oils obtained from fennel. It has a role as a plant metabolite. It is an enantiomer of a (1S,4R)-fenchone. — ChEBI

IUPAC name
(1R,4S)-1,3,3-trimethylbicyclo[2.2.1]heptan-2-one
Molecular formula
C10H16O
Molecular weight
152.23 g/mol
Exact mass
152.120115130 Da
XLogP3
2.3
Topological polar surface area
17.1 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
2

Also known as

L-Fenchone(1R)-(-)-Fenchone(1R,4S)-fenchone(1R)-fenchoneFenchone, (-)-l-alpha-Fenchone(1R,4S)-fenchan-2-oneK6G5Y2Y3Q2
16 more reported names
FEMA NO. 4519(1R,4S)-(-)-FenchoneRefChem:1049105(4R)-2,2,4-trimethylbicyclo(2.2.1)heptan-3-oneEINECS 232-107-5( -)-Fenchone(-)-1,3,3-Trimethyl-2-norbornanone232-107-5fenchone, (1R)-isomerBicyclo(2.2.1)heptan-2-one, 1,3,3-trimethyl-, (1R,4S)-3,3-Dimethyl-8,9-dinorbornan-2-one1,3,3-Trimethylnorbornan-2-oneBicyclo[2.2.1]heptan-2-one, 1,3,3-trimethyl-, (1R,4S)-(1R,4S)-(+)-fenchoneUNII-K6G5Y2Y3Q2NSC 8896
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 7787-20-4

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How CAS 7787-20-4 is used on this site

CAS 7787-20-4 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 7787-20-4 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.