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CAS 591-12-8

CAS 591-12-8 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 591-12-8
CAS 591-12-8PubChem CID 11559

alpha-Angelica lactone

Alpha-angelica lactone is an angelica lactone and a butenolide. It is functionally related to a but-3-en-4-olide. It is a tautomer of a beta-angelica lactone. — ChEBI

IUPAC name
5-methyl-3H-furan-2-one
Molecular formula
C5H6O2
Molecular weight
98.10 g/mol
Exact mass
98.036779430 Da
XLogP3
0.6
Topological polar surface area
26.3 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

5-Methylfuran-2(3H)-onealpha-Angelicalactone5-Methyl-2(3H)-furanone2(3H)-FURANONE, 5-METHYL-4-Hydroxypent-3-enoic acid lactone4-Hydroxy-3-pentenoic acid gamma-lactonedelta(2)-Angelica lactone.alpha.-Angelica lactone
16 more reported names
gamma-Methyl-beta,gamma-crotonolactonea-Angelica lactonealpha-AngelicalactonUNII-29CRF6L9C5delta(sup 2)-Angelica lactoneCCRIS 3594.beta.,.gamma.-Angelica lactonea-angelicalactonebeta,gamma-Angelica lactoneEINECS 209-701-84-Methyl-2(3H)-furanone.delta.(2)-Angelica lactoneBRN 010839429CRF6L9C5AI3-04326NSC-654
Open full PubChem recordPubChem annotations3D structure image
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 591-12-8

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How CAS 591-12-8 is used on this site

CAS 591-12-8 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 591-12-8 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.