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CAS 40203-73-4

CAS 40203-73-4 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 40203-73-4

CAS 40203-73-4PubChem CID 162409

Acetic acid, 2-cyclopentylidene-, methyl ester

IUPAC name: methyl 2-cyclopentylideneacetate

Molecular formula: C8H12O2
Molecular weight: 140.18 g/mol
Exact mass: 140.083729621 Da
XLogP3: 1.6
Topological polar surface area: 26.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

Methyl cyclopentylideneacetateCyclopentylideneacetic acid, methyl esterAcetic acid, cyclopentylidene-, methyl esterEINECS 254-837-3EC 254-837-3RefChem:552144254-837-3CYCLOPENTYLIDENEACETIC ACID METHYL ESTER

10 more reported names

Cyclopentylidene-acetic acid methyl estertuberose acetateNBV7T69H2Rmethyl2-cyclopentylideneacetateZDBCSZOFHPULAS-UHFFFAOYSA-NCyclopentylidene acetic acid methyl esterBS-28158DB-307780CS-0218025EN300-97942

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External database identifiers

EPA DTXSID:DTXSID2052077

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 40203-73-4

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How CAS 40203-73-4 is used on this site

CAS 40203-73-4 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 40203-73-4 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.