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propyl levulinate
propyl 4-oxopentanoate

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CAS Number: 645-67-0Picture of molecule3D/inchi
FDA UNII: V2C79957U4
Nikkaji Web:J132.349K
XlogP3-AA:0.60 (est)
Molecular Weight:158.19718000
Formula:C8 H14 O3
BioActivity Summary:listing
NMR Predictor:Predict (works with chrome, Edge or firefox)
Category:flavoring agents
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar:Search
Google Books:Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Perfumer and Flavorist:Search
Google Patents:Search
US Patents:Search
EU Patents:Search
Pubchem Patents:Search
JECFA Food Flavoring:1971 propyl levulinate
FEMA Number:4480 propyl levulinate
FDA:No longer provide for the use of these seven synthetic flavoring substances
FDA Mainterm (SATF):645-67-0 ; PROPYL LEVULINATE
Physical Properties:
Appearance:colorless clear liquid (est)
Assay: 98.00 to 100.00
Food Chemicals Codex Listed: No
Specific Gravity:0.98900 to 0.99500 @ 20.00 °C.
Pounds per Gallon - (est).: 8.239 to 8.289
Refractive Index:1.41900 to 1.42500 @ 20.00 °C.
Boiling Point: 220.00 to 221.00 °C. @ 760.00 mm Hg
Acid Value: 1.00 max. KOH/g
Vapor Pressure:0.110000 mmHg @ 25.00 °C. (est)
Flash Point: 190.00 °F. TCC ( 87.78 °C. )
logP (o/w): 0.947 (est)
Soluble in:
 water, 1.508e+004 mg/L @ 25 °C (est)
Insoluble in:
Similar Items:note
allyl levulinate
isoamyl levulinate
benzyl levulinate
butyl levulinate
ethyl levulinate
(Z)-3-hexen-1-yl levulinate
methyl levulinate
isopropyl levulinate
Organoleptic Properties:
Odor Description:sweet caramellic
Odor and/or flavor descriptions from others (if found).
Cosmetic Information:
None found
For experimental / research use only.
Pentanoic acid, 4-oxo-,propyl ester
BOC Sciences
For experimental / research use only.
Propyl Levulinate
Inoue Perfumery
Penta International
Propyl levulinate, ≥95%
Certified Food Grade Products
Chemical Sources Association
Need This Item for Flavor/Food?: You can contact the Chemical Sources Association
Safety Information:
Preferred SDS: View
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
Safety in Use Information:
flavoring agents
Recommendation for propyl levulinate usage levels up to:
 not for fragrance use.
Use levels for FEMA GRAS flavoring substances on which the FEMA Expert Panel based its judgments that the substances are generally recognized as safe (GRAS).
The Expert Panel also publishes separate extensive reviews of scientific information on all FEMA GRAS flavoring substances and can be found at FEMA Flavor Ingredient Library
publication number: 24
Click here to view publication 24
 average usual ppmaverage maximum ppm
baked goods: 5.0000010.00000
beverages(nonalcoholic): 1.000003.00000
beverages(alcoholic): 5.0000010.00000
breakfast cereal: --
cheese: --
chewing gum: --
condiments / relishes: --
confectionery froastings: --
egg products: --
fats / oils: --
fish products: --
frozen dairy: 5.0000010.00000
fruit ices: --
gelatins / puddings: 5.0000010.00000
granulated sugar: --
gravies: --
hard candy: --
imitation dairy: --
instant coffee / tea: --
jams / jellies: --
meat products: --
milk products: --
nut products: --
other grains: --
poultry: --
processed fruits: --
processed vegetables: --
reconstituted vegetables: --
seasonings / flavors: --
snack foods: --
soft candy: 3.0000010.00000
soups: --
sugar substitutes: --
sweet sauces: --
Safety References:
EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :221069
National Institute of Allergy and Infectious Diseases:Data
WGK Germany:3
propyl 4-oxopentanoate
 propyl 4-oxopentanoate
NIST Chemistry WebBook:Search Inchi
Pubchem (cid):221069
Pubchem (sid):71076
Other Information:
(IUPAC):Atomic Weights of the Elements 2011 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
FDA Substances Added to Food (formerly EAFUS):View
HMDB (The Human Metabolome Database):HMDB41616
VCF-Online:VCF Volatile Compounds in Food
FAO:Propyl levulinate
Potential Blenders and core components note
None Found
Potential Uses:
None Found
Occurrence (nature, food, other):note
Search PMC Picture
 levulinic acid propyl ester
4-oxo-pentanoic acid propyl ester
 pentanoic acid, 4-oxo-, propyl ester
 pentanoic acid, 4-oxo-,propyl ester
 propyl 4-oxopentanoate
N-propyl levulinate
Caramellic flavouring agent [CCD]
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