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CAS 328-42-7

CAS 328-42-7 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 328-42-7
CAS 328-42-7PubChem CID 970

Oxaloacetic Acid

IUPAC name
2-oxobutanedioic acid
Molecular formula
C4H4O5
Molecular weight
132.07 g/mol
Exact mass
132.00587322 Da
XLogP3
-0.6
Topological polar surface area
91.7 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

oxalacetic acidoxaloacetateKetosuccinic acidOxosuccinic acid2-Ketosuccinic acidButanedioic acid, oxo-Bioepg2-oxo-butanedioic acid
16 more reported names
keto-oxaloacetateNSC-776882F399MM81JCHEBI:30744Acid, OxalaceticAcid, Oxaloacetic2 Ketosuccinic Acid2 oxo Butanedioic AcidRefChem:857040Oxalacetic acid trans-(z)-enol206-329-82-Oxosuccinic acidOxobutanedioic acidOxalacetic aceticalpha-Ketosuccinic acidOAA
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 328-42-7

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How CAS 328-42-7 is used on this site

CAS 328-42-7 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 328-42-7 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.