5-METHYL-3-HEXEN-2-ONE

Product Name: 5-METHYL-3-HEXEN-2-ONE
CAS No.: 5166-53-0
Chemical Name: 5-METHYL-3-HEXEN-2-ONE
Synonyms: FEMA 3409;filbert hexenone;3-Hexen-2-one, 5-Me;5-methyl-3-hexen-2-on;3-HEXAN-2-ONE,5-METHYL;5-METHYLHEX-3-EN-2-ONE;5-METHYL-3-HEXEN-2-ONE;5-Methyl-2-oxohex-3-ene;5-Methyl-3-hexene-2-one;2-Oxo-5-methylhex-3-ene
CBNumber: CB5365636
Molecular Formula: C7H12O
Formula Weight: 112.17
MOL File: 5166-53-0.mol

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5-METHYL-3-HEXEN-2-ONE Property

Boiling point:: 157°C
Density: 0.85 g/mL at 25 °C (lit.)
refractive index: n20/D 1.44(lit.)
FEMA: 3409 | 5-METHYL-3-HEXEN-2-ONE
Flash point:: 118 °F
storage temp.: Storage temp. 2-8°C
form: clear liquid
color: Colorless to Light yellow to Light orange
Odor: at 100.00 %. sweet berry cheese
Odor Type: fruity
JECFA Number: 1132
InChI: 1S/C7H12O/c1-6(2)4-5-7(3)8/h4-6H,1-3H3/b5-4+
InChIKey: IYMKNYVCXUEFJE-SNAWJCMRSA-N
SMILES: CC(C)\C=C\C(C)=O
LogP: 1.44
CAS DataBase Reference: 5166-53-0(CAS DataBase Reference)
EPA Substance Registry System: 3-Hexen-2-one, 5-methyl- (5166-53-0)

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Safety

Hazard Codes: Xn,T
Risk Statements: 10-20/21/22-24-20/22
Safety Statements: 16-27-36/37/39-45-36/37
RIDADR: UN 1992 3/PG 3
WGK Germany: 3
RTECS: MP8750000
TSCA: TSCA listed
HazardClass: 3
PackingGroup: III
HS Code: 2914199090
Storage Class: 3 - Flammable liquids
Hazard Classifications: Acute Tox. 3 Dermal
Acute Tox. 4 Inhalation
Acute Tox. 4 Oral
Flam. Liq. 3

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H226Flammable liquid and vapour

H311Toxic in contact with skin

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 187607
Product name: 5-Methyl-3-hexen-2-one
Purity: technical grade, 75%
Packaging: 25g
Price: $345
Updated: 2025/07/31

TCI Chemical

Product number: M2366
Product name: 5-Methyl-3-hexen-2-one (contains 5-Methyl-4-hexen-2-one)
Packaging: 25mL
Price: $87
Updated: 2025/07/31

TCI Chemical

Product number: M2366
Product name: 5-Methyl-3-hexen-2-one (contains 5-Methyl-4-hexen-2-one)
Packaging: 100mL
Price: $211
Updated: 2025/07/31

AK Scientific

Product number: 6802AL
Product name: 5-Methyl-3-hexen-2-one
Packaging: 100ml
Price: $327
Updated: 2021/12/16

Apolloscientific

Product number: OR27820
Product name: 5-Methylhex-3-en-2-one
Purity: 75%
Packaging: 25g
Price: $95
Updated: 2021/12/16

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5-METHYL-3-HEXEN-2-ONE Chemical Properties,Usage,Production

Occurrence

Reported found in roasted filberts, green tea, cooked and roasted shrimp.

Uses

5-Methyl-3-hexen-2-one was used in combinatorial synthesis of mercaptoketones and mercaptoalcohols.

General Description

5-methyl-3-hexen-2-one reacts with indole in the presence of pyrrolidine and p-TsOH in CH₂Cl₂ to yield the 3-substituted indole adduct.

5-METHYL-3-HEXEN-2-ONE Preparation Products And Raw materials

Raw materials

Isobutyraldehyde

Preparation Products

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5-METHYL-3-HEXEN-2-ONE Suppliers

Americas 1 China 49 Europe 1 Germany 2 India 3 Japan 1 Switzerland 1 United Kingdom 4 United States 12 USA 1 Global 75

J & K SCIENTIFIC LTD.

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Adamas Reagent, Ltd.

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TCI Europe

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View Lastest Price from 5-METHYL-3-HEXEN-2-ONE manufacturers

Shaanxi Dideu Medichem Co. Ltd

Product: 5-Methyl-3-hexen-2-one 5166-53-0
Price: US $0.00-0.00/KG
Min. Order: 100g
Purity: 99.0%+
Supply Ability: 100 tons
Release date: 2020-01-19

Career Henan Chemical Co

Product: 5-METHYL-3-HEXEN-2-ONE 5166-53-0
Price: US $1.00/KG
Min. Order: 1KG
Purity: 99.0%
Supply Ability: 100kg
Release date: 2020-01-18

5166-53-0, 5-METHYL-3-HEXEN-2-ONERelated Search:

CITRININ THYMOQUINONE TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)EUROPIUM(III) PR(TMHD)3 TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)YTTERBIUM MEDROXYPROGESTERONE 2,6-Di-tert-butyl-p-benzoquinone 18β-Glycyrrhetinic Acid alpha-Ionone ERBIUM TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATE) 3,5-DI-TERT-BUTYL-O-BENZOQUINONE DYSPROSIUM-FOD GD(TMHD)3 5-METHYL-3-HEXEN-2-ONE Oxytetracycline dihydrate TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)DYSPROSIUM(III) Methylprednisolone Tris(dipivaloylmethanato)lanthanum

5-METHYL-3-HEXEN-2-ONE

5-METHYLHEX-3-EN-2-ONE

5-METHYL-3-HEXEN-2-ONE, TECH., 80%

3-Hexen-2-one, 5-methyl-

3-HEXAN-2-ONE,5-METHYL

FEMA 3409

5-Methyl-3-hexene-2-one

5-Methyl-2-oxohex-3-ene

5-Methyl-3-hexen-2-one (contains 5-Methyl-4-hexen-2-one)

5-Methyl-3-hexen-2-one technical grade, 75%

5-Methylhex-3-en-2-one75%

(3E)-5-Methyl-3-hexen-2-one

2-Oxo-5-methylhex-3-ene

3-Hexen-2-one, 5-Me

5-methyl-3-hexen-2-on

5-Methylhex-3-en-2-one 75%

5-METHYL-3-HEXEN-2-ONE USP/EP/BP

filbert hexenone

5166-53-0

CH32CHCHCHCOCH3

Ketones

Organic Building Blocks

Carbonyl Compounds

C7 to C8

Building Blocks

C7 to C8

Carbonyl Compounds

Ketones