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CAS 503-74-2 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 3975102/03/2011

ISOVALERIC ACID

3-Methylbutanoic Acid.

ISOVALERIC ACID 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 503-74-2

CAS 503-74-2PubChem CID 10430

Isovaleric Acid

Isovaleric acid is a C5, branched-chain saturated fatty acid. It has a role as a mammalian metabolite and a plant metabolite. It is a short-chain fatty acid, a methylbutyric acid and a branched-chain saturated fatty acid. It is a conjugate acid of an isovalerate. — ChEBI

IUPAC name: 3-methylbutanoic acid

Molecular formula: C5H10O2
Molecular weight: 102.13 g/mol
Exact mass: 102.068079557 Da
XLogP3: 1.2
Topological polar surface area: 37.3 Å²
Hydrogen-bond donors: 1
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

Isopentanoic acid3-Methylbutyric acidIsopropylacetic acidDelphinic acidButanoic acid, 3-methyl-Isovalerianic acidIsobutylformic acidbeta-Methylbutyric acid

16 more reported names

3-methyl-butanoic acidAcetic acid, isopropyl-Butyric acid, 3-methyl-Kyselina isovalerovaIsobutyl formic acidFEMA No. 31023-methyl-n-butyric acidFEMA Number: 31021BR7X184L5NSC-62783CHEBI:28484RefChem:5927207-975-33-MethylbutyrateIsovalerianic3-methyl butyric acid

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:28484
ChEMBL:CHEMBL568737
EPA DTXSID:DTXSID5029182
PubMed:23037705
PubMed:23009608
PubMed:22863090
PubMed:22851241
PubMed:22840201
PubMed:22785467
PubMed:22750494
PubMed:22716902
PubMed:22682363
PubMed:22657950
PubMed:22655031
PubMed:22594616

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 ISOVALERIC ACID

INCI name

ISOVALERIC ACID

Description

3-Methylbutanoic Acid.

Record provenance

Inventory reference: 39751
Imported identity: ISOVALERIC ACID
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for ISOVALERIC ACID

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Key data

CAS

503-74-2

207-975-3

Restriction

—

Function

PERFUMING: Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

ISOPROPYLQUINOLINEPERFUMING

ISOPULEGYL ACETATEPERFUMING

ISOPULEGYL FORMATEPERFUMING

ISOTRIDECYL ACETATEPERFUMING

JASMINUM GRANDIFLORUM FLOWER EXTRACTFRAGRANCE, PERFUMING

JASMINUM GRANDIFLORUM FLOWER OILFRAGRANCE; PERFUMING; SKIN CONDITIONING - MISCELLANEOUS

JASMINUM OFFICINALE FLOWER EXTRACTFRAGRANCE, PERFUMING

JASMINUM OFFICINALE FLOWER OILPERFUMING

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 ISOVALERIC ACID appears in the CosIng inventory

The CosIng inventory lists ISOVALERIC ACID 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.

ISOVALERIC ACID 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

ISOVALERIC ACID 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, ISOVALERIC ACID carries the following function designation(s):

PERFUMING

CAS 503-74-2 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 ISOVALERIC ACID

This page reproduces the CosIng inventory entry for ISOVALERIC ACID 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 ISOVALERIC ACID 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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