Official EU label nameGlossary entry 238

2-METHYLPROPANAL

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

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Evidence gaps

Resolved identifiers

Resolved substance identity

CAS:78-84-2

EC:201-149-6

Ingredient index records:

2-METHYLPROPANAL

Cosmetic functions: NAIL CONDITIONING, PERFUMING

Dimethylacetaldehyde; Isobutyraldehyde

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1 matched or reported name

2-METHYLPROPANAL

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name 2-METHYLPROPANAL.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 78-84-2

CAS 78-84-2PubChem CID 6561

Isobutyraldehyde

Isobutyraldehyde is a member of the class of propanals that is propanal substituted by a methyl group at position 2. It has a role as a Saccharomyces cerevisiae metabolite. It is a member of propanals and a 2-methyl-branched fatty aldehyde. — ChEBI

IUPAC name: 2-methylpropanal

Molecular formula: C4H8O
Molecular weight: 72.11 g/mol
Exact mass: 72.057514874 Da
XLogP3: 0.8
Topological polar surface area: 17.1 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

IsobutanalIsobutylaldehyde2-MethylpropionaldehydePropanal, 2-methyl-Isobutyric aldehydeMethylpropanalValine aldehyde2-Methyl-1-propanal

16 more reported names

IsopropylaldehydeIsopropylformaldehydeIsobutaldehydeIsobutyraldehydIsobutyralMethyl propanalIsobutyryl aldehydeIsopropyl aldehydealpha-MethylpropionaldehydeIsopropyl formaldehydeisobutyl aldehydePropionaldehyde, 2-methyl-ISO-BUTYRALDEHYDEFEMA No. 2220NCI-C60968NSC-6739

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External database identifiers

ChEBI:CHEBI:48943
ChEMBL:CHEMBL1404017
EPA DTXSID:DTXSID9021635
PubMed:33358762
PubMed:22966671
PubMed:22959517
PubMed:22864971
PubMed:22759915
PubMed:22731523
PubMed:22701113
PubMed:22623903
PubMed:22586450
PubMed:22417425
PubMed:22416247
PubMed:22375885

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Additional authoritative substance research

Each link searches that source for this identity. A link is a research route, not a claim that the source holds an exact record. What each source is, and its legal weight

Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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