二氢茉莉酮；2-戊基-3-甲基-2-环戊烯-1-酮

Description

Dihydrojasmone(2-Pentyl-3-methyl-2-cyclopenten-1-one) is identified by CAS 1128-08-1, molecular formula C11H18O and molecular weight 166.14 g/mol. UNII Y953R7PP90; ChEBI 143730; InChIKey YCIXWYOBMVNGTB-UHFFFAOYSA-N. Boiling Point: 79 °C (0.19 mm Hg); Density: 0.911-0.917; Refractive Index: 1.676-1.682.

Identification

CAS Registry Number	1128-08-1
PubChem CID	62378
Molecular formula	C11H18O
Molecular weight	166.14 g/mol
IUPAC name	3-methyl-2-pentylcyclopent-2-en-1-one
InChIKey	YCIXWYOBMVNGTB-UHFFFAOYSA-N
UNII (FDA)	Y953R7PP90
ChEBI ID	CHEBI:143730
FEMA number	3763
JECFA number	1406

Computed Descriptors

Molecular Weight	166.26
XLogP3	2.9
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	4
Exact Mass	166.135765193
Monoisotopic Mass	166.135765193
Topological Polar Surface Area	17.1
Heavy Atom Count	12
Formal Charge	0

Physical & Chemical Properties

Boiling Point	79 °C (0.19 mm Hg)
Density	0.911-0.917
Refractive Index	1.676-1.682

Physical description & handling notes

• Colourless liquid; celery, herbacous, spicy aroma
• Soluble in fats; Very slightly soluble in water
• Soluble (in ethanol)

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: FLAVORING AGENT OR ADJUVANT Flavoring Agents FLAVOURING_AGENT: Flavouring Agent Floral No safety concern at current levels of intake when used as a flavouring agent
GHS notification summary	21.2% (347 / 1635)

GHS Hazard Classification

GHS notification summary	21.2% (347 / 1635)
Reported hazard statements	H319 (78.8%)

Documented Uses

• Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
• Flavoring Agents -> JECFA Flavorings Index
• 2-Cyclopenten-1-one, 3-methyl-2-pentyl-: ACTIVE

Synonyms

Dihydrojasmone; 1128-08-1; 3-Methyl-2-pentylcyclopent-2-enone; 2-CYCLOPENTEN-1-ONE, 3-METHYL-2-PENTYL-; FEMA No. 3763; 3-Methyl-2-(n-pentanyl)-2-cyclopenten-1-one; DTXSID4051584; Y953R7PP90; NSC-71928; RefChem:133852; DTXCID8030136; 214-434-5; 3-methyl-2-pentylcyclopent-2-en-1-one; 2-Pentyl-3-methyl-2-cyclopenten-1-one; Jasmone, dihydro-; Dihydrojasmone (natural)

Frequently Asked Questions

What are the CAS number and molecular formula of Dihydrojasmone(2-Pentyl-3-methyl-2-cyclopenten-1-one)?

CAS 1128-08-1; molecular formula C11H18O; molecular weight 166.14 g/mol.

What other names is Dihydrojasmone(2-Pentyl-3-methyl-2-cyclopenten-1-one) known by?

Dihydrojasmone, 1128-08-1, 3-Methyl-2-pentylcyclopent-2-enone, 2-CYCLOPENTEN-1-ONE, 3-METHYL-2-PENTYL-, FEMA No. 3763, 3-Methyl-2-(n-pentanyl)-2-cyclopenten-1-one.

What is the regulatory status of Dihydrojasmone(2-Pentyl-3-methyl-2-cyclopenten-1-one)?

Documented regulatory listings: EU Flavoring substances; FDA Substance added to food: FLAVORING AGENT OR ADJUVANT; Flavoring Agents.

Is Dihydrojasmone(2-Pentyl-3-methyl-2-cyclopenten-1-one) classified as hazardous?

21.2% of GHS notifications report no hazard classification (347 of 1635).

What are the key physical properties of Dihydrojasmone(2-Pentyl-3-methyl-2-cyclopenten-1-one)?

Boiling Point: 79 °C (0.19 mm Hg); Density: 0.911-0.917; Refractive Index: 1.676-1.682.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.