Description

(E)-5-Methyl-4-Hepten-3-One is a high-purity, highly volatile ketone with a distinct, unsaturated aliphatic structure. This compound serves as a valuable chemical intermediate and flavor/fragrance ingredient, prized for its ability to impart unique organoleptic properties. It is primarily sought by manufacturers in the flavor & fragrance, pharmaceutical, and fine chemical synthesis industries for creating complex aroma profiles and advanced molecular architectures.

Application

• Flavor & Fragrance (F&F) Industry: Used as a key building block or modifier in the synthesis of complex aroma chemicals, contributing to fruity, green, or woody notes in perfumes, cosmetics, and food flavorings.
• Pharmaceutical Intermediates: Serves as a versatile chiral synthon in the research and production of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Organic Synthesis: Acts as a crucial intermediate in various organic reactions, including Michael additions, aldol condensations, and hydrogenations, for producing specialty chemicals.
• Agrochemicals: Utilized in the development and synthesis of advanced pesticide and herbicide formulations.
• Research & Development: Employed in academic and industrial R&D laboratories as a standard or starting material for chemical studies and process development.

Basic Information

Product Name	(E)-5-Methyl-4-Hepten-3-One
CAS No.	20685-44-3
Molecular Formula	C8H14O
Molecular Weight	126.20 g/mol
Synonyms	(E)-5-Methylhept-4-en-3-one; 5-Methyl-4-hepten-3-one; (E)-5-Methyl-4-hepten-3-one; 4-Hepten-3-one, 5-methyl-, (E)-; FEMA 3761; 5-Methyl-4-hepten-3-one (mixed isomers); Ethyl isoamyl ketone (unsaturated derivative); Unsaturated C8 ketone
EINECS	243-925-4

Quality Control

Our (E)-5-Methyl-4-Hepten-3-One is produced under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity, consistent isomer ratio, and compliance with customer specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and quality assurance for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and open flame. Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use to prevent evaporation and maintain product integrity. Recommended storage temperature: 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0% (sum of isomers)
(E)-Isomer Ratio (GC)	≥ 95.0%
Refractive Index (20°C)	1.435 - 1.445
Specific Gravity (20/20°C)	0.840 - 0.850
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.