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3-PENTEN-2-ONE

3-PENTEN-2-ONE structure

CAS No.: 625-33-2

Chemical Name:: 3-PENTEN-2-ONE

Synonyms: (E)-pent-3-en-2-one;pent-3-en-2-one;METHYL PROPENYL KETONE;FEMA 3417;2-Penten-4-one;(3E)-3-Penten-2-one;3-PENTEN-2-ONE;3-PENTENE-2-ONE;3-pentane-2-one;2-Oxo-3-pentene

CBNumber:: CB4157470

Molecular Formula:: C5H8O

Molecular Weight:: 84.12

MDL Number:: MFCD00009290

MOL File:: 625-33-2.mol

MSDS File:: SDS

TDS File:: TDS

Last updated:2026-05-28 03:14:26

Product description	Number	Pack Size	Price
3-Penten-2-one 70%	145017	1g	$72.8
3-Penten-2-one 70%	145017	5g	$158
3-Penten-2-one 98%	AA00398Z	1g	$8
3-Penten-2-one 98%	AA00398Z	5g	$21
3-Penten-2-one 98%	AA00398Z	10g	$40
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3-PENTEN-2-ONE Properties

Boiling point	121-124 °C (lit.)
Density	0.862 g/mL at 25 °C (lit.)
vapor pressure	760 mm Hg ( 121 °C)
refractive index	n20/D 1.437(lit.)
FEMA	3417 \| 3-PENTEN-2-ONE
FLAVIS Number	07.044 \| Pent-3-en-2-one
Flash point	70 °F
storage temp.	Sealed in dry,2-8°C
solubility	Chloroform (Sparingly), Ethyl Acetate (Slightly)
form	Liquid
color	Clear colorless
Odor	at 0.10 % in dipropylene glycol. fruity acetone phenolic fishy
Odor Type	fruity
Water Solubility	Slightly soluble in Water
JECFA Number	1124
BRN	1633505
Stability	Stable. Flammable. Incompatible with strong oxidizing and strong reducing agents, strong acids, strong bases.
InChI	1S/C5H8O/c1-3-4-5(2)6/h3-4H,1-2H3
InChIKey	LABTWGUMFABVFG-UHFFFAOYSA-N
SMILES	CC(C=CC)=O
LogP	0.56
Substances Added to Food (formerly EAFUS)	3-PENTEN-2-ONE
EWG's Food Scores	1
FDA UNII	4WN5NGB7KX
EPA Substance Registry System	3-Penten-2-one (625-33-2)
UNSPSC Code	12352100
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS02,GHS06

Signal word

Danger

Hazard statements

H225-H311-H315-H319-H335

Precautionary statements

P210-P233-P240-P280-P303+P361+P353-P305+P351+P338

target organs

Respiratory system

PPE

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

Hazard Codes

F,Xn

Risk Statements

11-21-36/37/38

Safety Statements

16-26-33-36/37/39

RIDADR

UN 1992 3/PG 2

WGK Germany

RTECS

SB3850000

10-19

TSCA

TSCA listed

HazardClass

PackingGroup

HS Code

29141990

Storage Class

3 - Flammable liquids

Hazard Classifications

Acute Tox. 3 Dermal
Eye Irrit. 2
Flam. Liq. 2
Skin Irrit. 2
STOT SE 3

Limited Quantities

1.0 L (0.3 gallon) (liquid)

Excepted Quantities

Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)

NFPA 704

	3
2		1

3-PENTEN-2-ONE price More Price(23)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	145017	3-Penten-2-one 70%	625-33-2	1g	$72.8	2026-04-30	Buy
Sigma-Aldrich	145017	3-Penten-2-one 70%	625-33-2	5g	$158	2026-04-30	Buy
aablocks	AA00398Z	3-Penten-2-one 98%	625-33-2	1g	$8	2026-05-28	Buy
aablocks	AA00398Z	3-Penten-2-one 98%	625-33-2	5g	$21	2026-05-28	Buy
aablocks	AA00398Z	3-Penten-2-one 98%	625-33-2	10g	$40	2026-05-28	Buy

Product number	Packaging	Price	Buy
145017	1g	$72.8	Buy
145017	5g	$158	Buy
AA00398Z	1g	$8	Buy
AA00398Z	5g	$21	Buy
AA00398Z	10g	$40	Buy

3-PENTEN-2-ONE Chemical Properties,Uses,Production

Chemical Properties

colourless liquid with a pungent odour

Chemical Properties

3-Penten-2-one has a fruity odor becoming pungent on storage.

Occurrence

Reported found among the volatile components of roasted peanuts; also in cranberry, mango, bilberry, rum, cocoa, coffee, tea, roasted filberts, roasted peanuts, potato chips, lingonberry, strawberry fruit and jam, tomato, wheat bread, parmesan cheese, yogurt, fatty fish, passion fruit, beans, mango, tamarind, rice, Bourbon vanilla, endive, shrimp, katsubushi and buckwheat.

Uses

3-Penten-2-one was used in the synthesis of the alkaloids (+/-)-senepodine G and (+/-)-cermizine C.

Preparation

From 4-hydroxy-pentan-2-one refluxed with oxalic acid.

Definition

ChEBI: An enone that is pent-2-ene in which the two methylene hydrogens have been replaced by an oxo group.

Taste threshold values

Taste characteristics at 10 ppm: musty, stale water and phenolic with a fishy and shellfish nuance.

General Description

3-Penten-2-one is volatile compound present in berry fruit of two Aronia melanocarpa genotypes. Urinary 3-penten-2-one is a useful biomarker for increased accumulation of acetaldehyde during abnormal metabolic stress.

Biochem/physiol Actions

3-Penten-2-one inhibits nitric oxide production and inducible nitric oxide synthase expression via heme oxygenase-1 expression in lipopolysaccharide-activated RAW264.7 macrophages.

3-PENTEN-2-ONE synthesis

Synthesis of 3-PENTEN-2-ONE from Diethyl (2-oxopropyl)phosphonate and Acetaldehyde

3-PENTEN-2-ONE Preparation Products And Raw materials

Raw materials

Preparation Products

(NE)-N-pentan-2-ylidenehydroxylamine 2,2-Diethyl-tetrahydro-pyran-4-one

3-PENTEN-2-ONE Suppliers

Global( 160)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
BOC Sciences	16314854226; +8616314854226	inquiry@bocsci.com	United States	19852	58
Hebei Chuanghai Biotechnology Co,.LTD	+86-86-13131129325	sales1@chuanghaibio.com	China	5214	58
JINING XINHE CHEMICAL CO., LTD	+8615318402391	sales@xinhepharma.com	China	808	58
Speranza Chemical Co., Ltd.	+86-86-075521030354 +86-18688942810	sophieliu@speranzachem.com	China	923	55
career henan chemical co	+86-0371-86658258	sales@coreychem.com	China	29766	58
Xiamen AmoyChem Co., Ltd	+86-86-5926051114	sales@amoychem.com	China	6339	58
CONIER CHEM AND PHARMA LIMITED		sales@conier.com	China	49906	58
Shaanxi Dideu Medichem Co. Ltd	+86-29-87569262 +86-15003564040	1056@dideu.com	China	3970	58
SIMAGCHEM CORP	+86-5922680277 +86-13806087780	sale@simagchem.com	China	17339	58
Hefei Hangang Pharmaceutical Technology Co., Ltd.	+8618062405514	ada@ipurechemical.com	China	10224	58

Supplier	Advantage
BOC Sciences	58
Hebei Chuanghai Biotechnology Co,.LTD	58
JINING XINHE CHEMICAL CO., LTD	58
Speranza Chemical Co., Ltd.	55
career henan chemical co	58
Xiamen AmoyChem Co., Ltd	58
CONIER CHEM AND PHARMA LIMITED	58
Shaanxi Dideu Medichem Co. Ltd	58
SIMAGCHEM CORP	58
Hefei Hangang Pharmaceutical Technology Co., Ltd.	58

View Lastest Price from 3-PENTEN-2-ONE manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-05-28	3-Penten-2-one 625-33-2	$2.00-5.00	1KG	99%	10000kg	Hebei Chuanghai Biotechnology Co,.LTD
2024-07-23	3-PENTEN-2-ONE 625-33-2		1kg	98%	10ton	JINING XINHE CHEMICAL CO., LTD
2024-07-15	3-PENTEN-2-ONE 625-33-2		1kg	99%	10ton	JINING XINHE CHEMICAL CO., LTD

3-Penten-2-one
625-33-2
$2.00-5.00
99%
Hebei Chuanghai Biotechnology Co,.LTD

3-PENTEN-2-ONE
625-33-2
98%
JINING XINHE CHEMICAL CO., LTD

3-PENTEN-2-ONE
625-33-2
99%
JINING XINHE CHEMICAL CO., LTD

3-PENTEN-2-ONE Spectrum

3-PENTEN-2-ONE(625-33-2)¹HNMR 3-PENTEN-2-ONE(625-33-2)¹³CNMR 3-PENTEN-2-ONE(625-33-2)IR1 3-PENTEN-2-ONE(625-33-2)Raman

625-33-2(3-PENTEN-2-ONE)Related Search:

Platinum bis(acetylacetonate) Vanadyl acetylacetonate Tris(2,4-pentanedionato)chroMiuM(III) PR(TMHD)3 TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)YTTERBIUM

Nickel(II) acetylacetonate MANGANESE(II) ACETYLACETONATE ZINC ACETYLACETONATE HYDRATE COBALT(II) ACETYLACETONATE TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)EUROPIUM(III)

Bis(2,4-pentanedionato-O,O')palladium(II) TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)DYSPROSIUM(III) Manganic acetylacetonate Ruthenium acetylacetonate VANADIUM(III) ACETYLACETONATE

2,4-PENTANEDIONE, SILVER DERIVATIVE Aluminum acetylacetonate Ferric acetylacetonate

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(E)-CH3CH=CHC(=O)CH3 2-Oxo-3-pentene 3-penten-2-one (methyl vinyl ketone) Ethylidene acetone ethylideneacetone Methyl 1-propenyl ketone TRANS-2-UNDECENAL 90+% 3-PENTEN-2-ONE, TECH. 85% 3-pentane-2-one 3-PENTENE-2-ONE 3-PENTEN-2-ONE 2-Penten-4-one Inchi=1/C5H8o/C1-3-4-5(2)6/H3-4H,1-2H3/B4-3 3-Penten-2-one,Methyl propenyl ketone 3-Penten-2-one, technical, 70% 3-Penten-2-one, 70%, technical 3-Penten-2-one 70% (E)-3-Penten-2-One,>95% 625-33-2 C5H8O 3-PENTEN-2-ONE CAS NO.625-33-2 CAS NO.625-33-2 3-pentene-2-ketone 3-pentylene-2-one (3E)-3-Penten-2-one (E)-pent-3-en-2-one FEMA 3417 METHYL PROPENYL KETONE pent-3-en-2-one 625-33-2 CH3CHCHCOCH3 Organic Building Blocks Ketones Carbonyl Compounds C3 to C6 Building Blocks