Description

3,4-Nonadien-2-One (9Ci) is a high-purity, unsaturated ketone building block with the CAS registry number 118893-64-4. This compound is valued for its unique conjugated dienone structure, which makes it a versatile intermediate in advanced organic synthesis. It is primarily sought after by R&D chemists and process development teams in the pharmaceutical, agrochemical, and specialty fragrance industries for constructing complex molecular frameworks.

Application

• Pharmaceutical Intermediate: A key synthon for the synthesis of novel active pharmaceutical ingredients (APIs), particularly those requiring specific unsaturated ketone motifs.
• Agrochemical Research: Used in the development of new generation pesticides and herbicides, leveraging its reactive backbone for structural diversification.
• Flavor & Fragrance Ingredient: Serves as a precursor for creating unique aroma molecules and flavor compounds in high-value specialty applications.
• Organic Synthesis Building Block: Employed in Diels-Alder reactions, Michael additions, and other cyclization processes to construct complex, polycyclic organic compounds.
• Material Science Research: Investigated as a monomer or cross-linking agent in the development of specialized polymers with tailored properties.
• Chemical Reference Standard: Supplied as a certified reference material for analytical method development and quality control in regulatory and research laboratories.

Basic Information

Product Name	3,4-Nonadien-2-One (9Ci)
CAS No.	118893-64-4
Molecular Formula	C₉H₁₄O
Molecular Weight	138.21 g/mol
Synonyms	3,4-Nonadien-2-One; 3,4-Nonadien-2-one (9CI); Nonadienone; 2-Nonen-4-yn-3-one (related structure); Unsaturated C9 Ketone; (E/Z)-3,4-Nonadien-2-One (isomer); Alkenynone intermediate
EINECS	Contact for details

Quality Control

Every batch of 3,4-Nonadien-2-One (9Ci) is manufactured and tested under a strict quality management system. Our products undergo rigorous analytical testing, including chromatography and spectroscopy, to ensure identity, purity, and consistency meet the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended storage temperature is 2-8°C for long-term stability. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 95.0%
Purity (GC Area %)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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