Skip to Content
Merck
All Photos(1)

Documents

W342106

Sigma-Aldrich

4-Oxoisophorone

≥98%, FG

Synonym(s):

2,6,6-Trimethyl-2-cyclohexene-1,4-dione, 4-Oxoisophorone, Ketoisophorone

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
C9H12O2
CAS Number:
Molecular Weight:
152.19
FEMA Number:
3421
Beilstein:
2207030
EC Number:
Council of Europe no.:
11200
MDL number:
UNSPSC Code:
12164502
PubChem Substance ID:
Flavis number:
7.109
NACRES:
NA.21

biological source

synthetic

Quality Level

grade

FG
Fragrance grade
Halal
Kosher

Agency

follows IFRA guidelines
meets purity specifications of JECFA

reg. compliance

EU Regulation 1223/2009
EU Regulation 1334/2008 & 178/2002

Assay

≥98%

refractive index

n20/D 1.491 (lit.)

bp

222 °C (lit.)
92-94 °C/11 mmHg (lit.)

mp

26-28 °C (lit.)

application(s)

flavors and fragrances

Documentation

see Safety & Documentation for available documents

food allergen

no known allergens

fragrance allergen

no known allergens

Organoleptic

musty; woody; sweet

SMILES string

CC1=CC(=O)CC(C)(C)C1=O

InChI

1S/C9H12O2/c1-6-4-7(10)5-9(2,3)8(6)11/h4H,5H2,1-3H3

InChI key

AYJXHIDNNLJQDT-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

4-Oxoisophorone is a flavor compound found in tobacco and saffron.

Application

<ul>
<li><strong>Characterization of Evodia rutaecarpa (Juss) Benth honey: volatile profile, odor-active compounds and odor properties.</strong> This study investigates the unique aroma compounds in Evodia rutaecarpa honey, identifying 4-Oxoisophorone as a key component influencing its sensory characteristics, crucial for developing enhanced food products with distinct flavors (Li et al., 2024).</li>
<li><strong>Enantioselective Total Synthesis of (R,R)-Blumenol B and d(9)-(R,R)-Blumenol B.</strong> Describes the synthesis of biologically active compounds using 4-Oxoisophorone as a precursor, demonstrating its versatility in chemical synthesis and potential applications in developing pharmaceutical agents (Tan et al., 2022).</li>
<li><strong>The mystery of the butterfly bush Buddleja davidii: How are the butterflies attracted </strong> Explores the chemical attractants of Buddleja davidii, with 4-Oxoisophorone identified as a significant attractant, which could have implications for enhancing biodiversity and garden ecology (Lehner et al., 2022).</li>
</ul>

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Hazard Classifications

Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Worldwide market screening of saffron volatile composition.
Maggi L, et al.
Journal of the Science of Food and Agriculture, 89(11), 1950-1954 (2009)
Study on the flavor change of tobacco powder during enzymatic hydrolysis and Maillard reaction
Wen DM, et al.
Science and Technology of Food Industry, 12, 038-038 (2012)
Stefano Raimondi et al.
Journal of biotechnology, 156(4), 279-285 (2011-09-22)
Old yellow enzymes (OYEs, EC 1.6.99.1) are flavin-dependent oxidoreductases that catalyze the stereoselective trans-hydrogenation of the double bond, representing a promising alternative to metal-based catalysis. Bioconversion of ketoisophorone (KIP) by 28 non-conventional yeasts belonging to 16 different species was investigated.
Mohamed-Elamir F Hegazy et al.
Zeitschrift fur Naturforschung. C, Journal of biosciences, 63(5-6), 403-408 (2008-08-02)
Stereospecific olefin (C=C) and carbonyl (C=O) reduction of the readily available prochiral compound ketoisophorone (2,2,6-trimethyl-2-cyclohexene-1,4-dione) (1) by Marchantia polymorpha and Nicotiana tabacum cell suspension cultures produce the chiral products (6R)-levodione (2), (4R,5S)-4-hydroxy-3,3,5-trimethylcyclohexanone (3), and (4R,6R)-actinol (4) as well as the
Marta Goretti et al.
Bioresource technology, 102(5), 3993-3998 (2011-01-15)
The bioreduction of α,β-unsaturated ketones (ketoisophorone, 2-methyl- and 3-methyl-cyclopentenone) and aldehydes [(S)-(-)-perillaldehyde and α-methyl-cinnamaldehyde] by 23 "non-conventional" yeasts (NCYs) belonging to 21 species of the genera Candida, Cryptococcus, Debaryomyces, Hanseniaspora, Kazachstania, Kluyveromyces, Lindnera, Nakaseomyces, Vanderwaltozyma, and Wickerhamomyces was reported. The

Articles

It seems that more and more consumers are demanding fragrance-free products, be it for household cleaning or personal care. Some believe that in doing so, they are purchasing a more natural product.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service