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CAS 96-17-3 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

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InventoryRef 4046102/03/2011

2-METHYLBUTYRALDEHYDE

2-Methylbutyraldehyde

2-METHYLBUTYRALDEHYDE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 96-17-3

CAS 96-17-3PubChem CID 7284

2-Methylbutanal

2-methylbutanal is a methylbutanal in which the methyl substituent is at position 2. It has a role as a volatile oil component, a Saccharomyces cerevisiae metabolite and a plant metabolite. It is a methylbutanal and a 2-methyl-branched fatty aldehyde. — ChEBI

IUPAC name: 2-methylbutanal

Molecular formula: C5H10O
Molecular weight: 86.13 g/mol
Exact mass: 86.073164938 Da
XLogP3: 1.1
Topological polar surface area: 17.1 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 1
Covalent units: 1
Defined stereocentres: 0

Also known as

2-Methylbutyraldehyde2-FormylbutaneButanal, 2-methyl-Butyraldehyde, 2-methyl-Methylethylacetaldehydealpha-MethylbutanalMethyl ethyl acetaldehydealpha-Methylbutyraldehyde

16 more reported names

FEMA No. 269147H597M1YYNSC-77077CHEBI:16182RefChem:476009202-485-62-Ethylpropanal2-Methylbutyric aldehyde2-Methyl-1-butanalAcetaldehyde, ethylmethyl-2-methyl butyraldehydeNSC 77077.alpha.-Methylbutanal2-methyl butanal.alpha.-Methylbutyraldehyde(RS)-2-Methylbutanal

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:16182
ChEMBL:CHEMBL2270060
EPA DTXSID:DTXSID2021818
PubMed:22641336
PubMed:22590002
PubMed:22589470
PubMed:22555296
PubMed:22536352
PubMed:22466083
PubMed:22385904
PubMed:22384333
PubMed:22364569
PubMed:22151917
PubMed:22071870
PubMed:21886906

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

Inventory details for 2-METHYLBUTYRALDEHYDE

INCI name

2-METHYLBUTYRALDEHYDE

Description

2-Methylbutyraldehyde

Record provenance

Inventory reference: 40461
Imported identity: 2-METHYLBUTYRALDEHYDE
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for 2-METHYLBUTYRALDEHYDE

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Key data

CAS

96-17-3

202-485-6

Restriction

—

Function

PERFUMING: Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

2-METHYLBUTANE-2-THIOLPERFUMING

2-METHYLBUTANOLPERFUMING

2-METHYLBUTYL BUTYRATEPERFUMING

2-METHYLBUTYL ISOVALERATEPERFUMING

2-METHYLBUTYRIC ACIDPERFUMING

2-METHYLDODECANALPERFUMING

2-METHYLFURAN-3-THIOLPERFUMING

2-METHYLNAPHTHALENEPERFUMING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox 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

How 2-METHYLBUTYRALDEHYDE appears in the CosIng inventory

The CosIng inventory lists 2-METHYLBUTYRALDEHYDE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

2-METHYLBUTYRALDEHYDE is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

2-METHYLBUTYRALDEHYDE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, 2-METHYLBUTYRALDEHYDE carries the following function designation(s):

PERFUMING

CAS 96-17-3 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for 2-METHYLBUTYRALDEHYDE

This page reproduces the CosIng inventory entry for 2-METHYLBUTYRALDEHYDE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research 2-METHYLBUTYRALDEHYDE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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