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CAS 105-68-0 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 4032302/03/2011

ISOAMYL PROPIONATE

3-Methylbutyl Propanoate; Isopentyl Propanoate

ISOAMYL PROPIONATE 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 105-68-0

CAS 105-68-0PubChem CID 7772

Isoamyl propionate

Isoamyl propanoate is a propanoate ester of isoamylol. It has a role as a metabolite. It is functionally related to an isoamylol. — ChEBI

IUPAC name: 3-methylbutyl propanoate

Molecular formula: C8H16O2
Molecular weight: 144.21 g/mol
Exact mass: 144.115029749 Da
XLogP3: 2.5
Topological polar surface area: 26.3 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 2
Covalent units: 1
Defined stereocentres: 0

Also known as

ISOAMYL PROPANOATEIsopentyl propanoateIsopentyl propionate3-Methylbutyl propionateIsopentyl alcohol, propionate1-Butanol, 3-methyl-, propanoateiso-Pentyl propionatePropionic acid, isopentyl ester

16 more reported names

3-Methyl-1-butyl propanoate1-Butanol, 3-methyl-, 1-propanoateFEMA No. 2082NSC 7932iso-Amyl n-propionateNSC-79322A8739M82ZWE(4:0(3Me)/3:0)Isoamyl propionate (natural)Propionic Acid Isoamyl EsterEINECS 203-322-1BRN 1747359propionic acid isopentyl esterAI3-33594UNII-2A8739M82Z1-Butanol, propanoate

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:87419
EPA DTXSID:DTXSID5047613
PubMed:22228946
PubMed:19575152
PubMed:15691743
PubMed:14574107

Evidence from additional scientific databases

EMBL-EBI ChEBI

Exact identifier matchCHEBI:87419

isoamyl propanoate

A propanoate ester of isoamylol.

Formula: C8H16O2
Average mass: 144.214 g/mol
Monoisotopic mass: 144.11503 Da
Formal charge: 0

propanoate ester — is a (CHEBI:36243)

metabolite — has role (CHEBI:25212)

isoamylol — has functional parent (CHEBI:15837)
metabolite — has role (CHEBI:25212)
propanoate ester — is a (CHEBI:36243)

Additional curated names

3-methylbutyl propanoate3-methylbutyl propionateisopentyl propanoateisopentyl propionate

Cross-references from this source

CAS: 105-68-0 — ChemIDplus
CAS: 105-68-0 — NIST Chemistry WebBook
REGISTRY_NUMBER: 1747359 — Reaxys
MANUAL_X_REF: HMDB0034164 — HMDB

Mapped by: Exact CAS cross-reference in the ChEBI compound record. Source updated: 2015-10-23. Retrieved: 2026-08-31. Open source record

NIH PubChem PUG-View

Exact identifier match7772

Attributed physical-property, hazard, environmental and use annotations.

Boiling Point: 159.00 to 161.00 °C. @ 760.00 mm Hg Source: Human Metabolome Database (HMDB)
Boiling Point: 160 °C Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)

Density: 0.866-0.871 Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)

Physical Description: Colourless liquid with a fruity, apricot, pineapple-like odour Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)

Refractive Index: 1.405-1.409 Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)

Solubility: Soluble in ethanol and most fixed oils, insoluble in glycerol, propylene glycol and water Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)
Solubility: 1ml in 3ml 70% ethanol (in ethanol) Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)

Signal: Warning Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
GHS Hazard Statements: H226: Flammable liquid and vapor [Warning Flammable liquids] Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
Precautionary Statement Codes: P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement) Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
Signal: Warning Source: European Chemicals Agency (ECHA)
GHS Hazard Statements: H226 (> 99.9%): Flammable liquid and vapor [Warning Flammable liquids] Source: European Chemicals Agency (ECHA)
Precautionary Statement Codes: P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
ECHA C&L Notifications Summary: Aggregated GHS information provided per 1663 reports by companies from 7 notifications to the ECHA C&L Inventory.; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
Signal: Warning Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
GHS Hazard Statements: H226: Flammable liquid and vapor [Warning Flammable liquids] Source: Hazardous Chemical Information System (HCIS), Safe Work Australia
Precautionary Statement Codes: P210, P233, P240, P241, P242, P243, P280, P303+P361+P353, P370+P378, P403+P235, and P501 (click each P-code to see the statement) Source: Hazardous Chemical Information System (HCIS), Safe Work Australia

Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record

Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.

Additional source coverage and match status

Source	Result	Checked
EMBL-EBI ChEBI	Exact match	2026-08-31
NIH PubChem PUG-View	Exact match	2026-08-31

A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.

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 ISOAMYL PROPIONATE

INCI name

ISOAMYL PROPIONATE

Description

3-Methylbutyl Propanoate; Isopentyl Propanoate

Record provenance

Inventory reference: 40323
Imported identity: ISOAMYL PROPIONATE
Source update: 02/03/2011

European Commission CosIng source notes

Annex records for ISOAMYL PROPIONATE

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Key data

CAS

105-68-0

203-322-1

Restriction

—

Function

PERFUMING: Used for perfume and aromatic raw materials.

Ingredients with overlapping formulation functions

ISOAMYL ISOVALERATEPERFUMING

ISOAMYL OCTANOATEPERFUMING

ISOAMYL PHENETHYL ETHERPERFUMING

ISOAMYL PHENYLACETATEPERFUMING

ISOAMYL SALICYLATEPERFUMING

ISOAMYL TIGLATEPERFUMING

ISOAMYL VALERATEPERFUMING

ISOAMYLBENZOATEPERFUMING

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 ISOAMYL PROPIONATE appears in the CosIng inventory

The CosIng inventory lists ISOAMYL PROPIONATE 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.

ISOAMYL PROPIONATE 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

ISOAMYL PROPIONATE 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, ISOAMYL PROPIONATE carries the following function designation(s):

PERFUMING

CAS 105-68-0 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 ISOAMYL PROPIONATE

This page reproduces the CosIng inventory entry for ISOAMYL PROPIONATE 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 ISOAMYL PROPIONATE 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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Tools & next steps

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Regulatory evidence by market

Chemical identity and properties

Isoamyl propionate

Evidence from additional scientific databases

EMBL-EBI ChEBI

Chemical classes 1

Chemical and biological roles 1

Ontology relationships 3

NIH PubChem PUG-View

Boiling Point 2

Density 1

Physical Description 1

Refractive Index 1

Solubility 2

GHS Classification 10