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CAS 1 record

CAS 21145-77-7

CAS 21145-77-7 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 21145-77-7
CAS 21145-77-7PubChem CID 89440

Tonalide

IUPAC name
1-(3,5,5,6,8,8-hexamethyl-6,7-dihydronaphthalen-2-yl)ethanone
Molecular formula
C18H26O
Molecular weight
258.4 g/mol
Exact mass
258.198365449 Da
XLogP3
5.3
Topological polar surface area
17.1 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
0

Also known as

TonalidTetralideAHTNTentaromeMusk tonalidAHMT (perfume)360Q8Z01IP2'-Acetonaphthone, 5',6',7',8'-tetrahydro-3',5',5',6',8',8'-hexamethyl-
16 more reported names
RefChem:8986111506-02-16-Acetyl-1,1,2,4,4,7-hexamethyltetralin1-(3,5,5,6,8,8-hexamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)ethanonefixolideAcetyl hexamethyl tetralin1-(3,5,5,6,8,8-hexamethyl-5,6,7,8-tetrahydronaphthalen-2-yl)ethan-1-oneEthanone, 1-(5,6,7,8-tetrahydro-3,5,5,6,8,8-hexamethyl-2-naphthalenyl)-C18H26O7-Acetyl-1,1,3,4,4,6-hexamethyltetralinNSC-195506-acetyl-1,1,2,4,4,7-hexamethyltetraline1-(3,5,5,6,8,8-Hexamethyl-5,6,7,8-tetrahydro-naphthalen-2-yl)ethanone1-(5,6,7,8-tetrahydro-3,5,5,6,8,8-hexamethyl-2-naphthalenyl)-ethanone1-(5,6,7,8-Tetrahydro-3,5,5,6,8,8-hexamethyl-2-naphthyl)ethan-1-one2-Acetyl-3,5,5,6,8,8-hexamethyl-5,6,7,8- tetrahydronaphthalene
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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 21145-77-7

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No records found for this CAS number.

How CAS 21145-77-7 is used on this site

CAS 21145-77-7 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares 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 21145-77-7 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.