Flavor ingredient regulatory record

Levulinic acid

Levulinic acid is an acid in the fruity family, FEMA GRAS under FEMA number 2627 (CAS 123-76-2). Its odor is sweet, fruity, caramel, slightly sour.

FEMA
2627
CAS
123-76-2
JECFA
606
EU FL
08.023
Formula
C5H8O3
EC
204-649-2

GRAS status: FEMA GRAS, publication 3. Recorded by FDA in the Substances Added to Food inventory under CAS 123-76-2.

Structure

2D structure of Levulinic acid
Structure of Levulinic acid, C5H8O3. Drawn from the canonical SMILES.

Identity

IUPAC name 4-oxopentanoic acid
CAS number 123-76-2
FEMA number 2627
Molecular formula C5H8O3
Molecular weight 116.12 g/mol
SMILES CC(=O)CCC(=O)O
InChIKey JOOXCMJARBKPKM-UHFFFAOYSA-N
PubChem CID 11579
EC number 204-649-2
FDA UNII RYX5QG61EI
EPA DTXSID DTXSID8021648
Chemical class Acid
Boiling point 245 °C
Flash point 109 °C

Also known as: Pentanoic acid, 4-oxo-, 4-Oxopentanoic acid, β-Acetylpropionic acid, γ-Ketovaleric acid, Laevulinic acid, Levulic acid, 3-Acetylpropionic acid, 4-Oxovaleric acid, 4-Ketovaleric acid, NSC 3716, 3-Oxobutanecarboxylic acid, 3-Acetylpropanoic acid.

Can Levulinic acid be labeled natural?

The process decides for levulinic acid. It occurs in nature, so a natural-source, natural-process material is natural flavor in the US and synthetic levulinic acid is artificial. The EU and UK follow the same logic without a middle class; Mercosur and Mexico label synthetic levulinic acid identical-to-natural.

United States
Natural or artificial, by process
European Union and UK
Natural only from natural material
Mercosur and Mexico
Natural or identical-to-natural

How each market defines the classes: natural vs artificial flavor under 21 CFR 101.22.

Regulatory status, with citations

United States

Levulinic acid is FEMA GRAS under FEMA number 2627. It is cited in the Code of Federal Regulations at 21 CFR 172.515.

21 CFR 172.515

European Union and United Kingdom

Listed on the Union List of flavouring substances as FL 08.023, Annex I Part A under Regulation (EC) 1334/2008, evaluation status approved (JECFA). The UK retains the same list.

JECFA (WHO / FAO)

JECFA number 606, evaluated at the 53rd meeting in 1999. No safety concern at current levels of intake when used as a flavouring agent.

JECFA monograph

Other US flags

Not on the California Proposition 65 list.

TSCA Inventory status

A flavor ingredient is also an industrial chemical. Levulinic acid appears on the EPA Toxic Substances Control Act Chemical Substance Inventory under CAS 123-76-2, where EPA names it Pentanoic acid, 4-oxo-.

Active in US commerce

EPA designates this substance active, so no Notice of Activity Form B is required before manufacturing. What active and inactive mean.

EPA publishes no regulatory flags on this listing. What the flags mean.

From the EPA non-confidential TSCA Inventory, July 2026 release. EPA also maintains a confidential portion it does not publish. Search the Inventory by CAS number.

Odor and taste

Odor: Sweet, fruity, caramel, slightly sour.

Taste: Sour, sweet, fruity.

Where it is used

Levulinic acid is used in beverage, confection, flavoring agent and food preservative, typically as a fruity note.

Structurally similar flavor ingredients

Flavor ingredients with a GRAS determination closest to Levulinic acid by structure. Whether one can replace it is a sensory and regulatory call; the reformulation tool works that through.

MaterialFEMASimilarityOccurrence
Succinic acid471993%In nature
L-Malic Acid265588%In nature
Fumaric acid248888%In nature
4-Methylpentanoic acid346380%In nature
L-Aspartic acid365679%In nature

More acids in this index

2-Methyl-2-pentenoic acid · cis-4-(2,2,3-Trimethylcyclopentyl)butanoic acid · Heptanoic acid · 4-Hydroxy-3-methoxycinnamic acid · 3-Methoxybenzoic acid · 4-Methylnonanoic acid

Levulinic acid FAQ

Is levulinic acid on the FEMA GRAS list?

It is. FEMA number 2627 covers levulinic acid. The Code of Federal Regulations lists it at 21 CFR 172.515.

What is the FEMA number for levulinic acid?

The FEMA number for levulinic acid is 2627 and its CAS registry number is 123-76-2. Its flavor category is fruity.

What is levulinic acid used for?

Levulinic acid is described as sweet, fruity, caramel, slightly sour. On the palate it is sour, sweet, fruity. It shows up in beverage, confection, flavoring agent and food preservative.

What did JECFA conclude about levulinic acid?

JECFA evaluated levulinic acid at the 53rd meeting in 1999 under JECFA number 606. The panel concluded: No safety concern at current levels of intake when used as a flavouring agent.

Is levulinic acid approved in the EU?

Yes. FL 08.023 is the Union List entry for levulinic acid, annex I Part A, under Regulation 1334/2008, and the UK keeps the same list.

Is levulinic acid natural or artificial?

Nature makes levulinic acid, which is why the US label turns on process. A natural route gives natural flavor; synthesis gives artificial levulinic acid, same molecule. The EU and UK grant the natural claim only to that natural route; Mercosur and Mexico call synthetic material identical-to-natural.

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Sources and attribution. The identity and regulatory facts on this page are taken from the FDA Substances Added to Food inventory, a US government record, which lists this substance as LEVULINIC ACID under CAS 123-76-2 and carries its FEMA number, its JECFA flavor number and its 21 CFR citations. The inventory is searchable at FDA. FDA records its technical effect as flavor enhancer, flavoring agent or adjuvant.

A FEMA GRAS conclusion is reached by the Expert Panel of the Flavor and Extract Manufacturers Association of the United States, and the FEMA number names that conclusion. FEMA publishes its own entry for this substance in the FEMA Flavor Library, which is the authoritative record of what the Panel decided and is worth reading alongside this page.

Ambrose Compliance is not affiliated with, endorsed by, or sponsored by FEMA. FEMA and FEMA GRAS are used here as identifiers for a published regulatory determination, not as marks of any relationship between FEMA and Ambrose.

About this page. Facts come from the FDA Substances Added to Food inventory, the Code of Federal Regulations, the EPA TSCA Inventory, the EU Union List, JECFA and the Ambrose database, with FEMA's published determination cited where it applies; parts of the text are written by Ambrose AI, which can make mistakes. Check the cited source before relying on anything here. This is not regulatory or legal advice.