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CAS 551-08-6

CAS 551-08-6 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 551-08-6
CAS 551-08-6PubChem CID 5352899

Butylidenephthalide

(E)-3-butylidenephthalide has been reported in Angelica gigas, Ligusticum striatum, and other organisms with data available. — LOTUS - the natural products occurrence database

IUPAC name
(3E)-3-butylidene-2-benzofuran-1-one
Molecular formula
C12H12O2
Molecular weight
188.22 g/mol
Exact mass
188.083729621 Da
XLogP3
3.2
Topological polar surface area
26.3 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

3-ButylidenephthalideLigusticum lactone3-Butylidene-1(3H)-isobenzofuranonePhthalide, 3-butylidene-FEMA No. 3333S9178G4B3F(3E)-3-butylidene-1,3-dihydro-2-benzofuran-1-oneRefChem:571853
16 more reported names
N-BUTYLIDENEPHTHALIDE, (E)+(Z)3-BUTYLIDENEPHTHALIDE, MIXTURE OF CIS AND TRANS ISOMERS208-991-3n-ButylidenephthalideNSC-325307Butylidene phthalide(E)-3-Butylidenephthalide3-Butylidene phthalide(E)-3-Butylideneisobenzofuran-1(3H)-one3-Butylidenephthalide, (E)-n-Butylidene phthalidee-butylidenephthalide(E)-Butylidenephthalide3-Butylidenephthalide, (Z)-EINECS 208-991-3NSC 325307
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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 551-08-6

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How CAS 551-08-6 is used on this site

CAS 551-08-6 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 551-08-6 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.