Description

5-Nonen-8-Yn-2-One, (E)- (9Ci) is a specialized aliphatic enyne ketone, a high-purity intermediate valued for its unique conjugated system and terminal alkyne functionality. This compound is critical for advanced organic synthesis, particularly in the construction of complex molecular scaffolds and bioactive compounds. It serves researchers and process chemists in the pharmaceutical, agrochemical, and advanced materials sectors who require precise, reliable building blocks for R&D and scale-up.

Application

• Pharmaceutical Intermediate: A key synthon for the synthesis of novel active pharmaceutical ingredients (APIs) and complex natural product analogs.
• Agrochemical Research: Used in developing new crop protection agents and plant growth regulators.
• Material Science: Serves as a precursor for specialty polymers, liquid crystals, and organic electronic materials.
• Chemical Synthesis: Employed in cross-coupling reactions (e.g., Sonogashira) and cycloadditions to create complex organic structures.
• Fragrance & Flavor Chemistry: Acts as an intermediate for synthesizing specific unsaturated ketone notes.
• Academic & Industrial R&D: A valuable tool for methodological development and exploring new reaction pathways in organic chemistry.

Basic Information

Product Name	5-Nonen-8-Yn-2-One, (E)- (9Ci)
CAS No.	75606-72-3
Molecular Formula	C9H12O
Molecular Weight	136.19 g/mol
Synonyms	(E)-5-Nonen-8-yn-2-one; (E)-5-Nonen-8-yn-2-one (9CI); 5-Nonen-8-yn-2-one, (E)-; trans-5-Nonen-8-yn-2-one; 2-Nonen-5-yn-8-one, (E)-; 8-Nonene-2,5-diyn-8-one (related); An enyne ketone intermediate.
EINECS	Contact for details

Quality Control

Every batch of 5-Nonen-8-Yn-2-One, (E)- (9Ci) is produced and tested under a strict quality management system. We ensure high chemical purity and consistency through advanced analytical techniques including GC, HPLC, and NMR spectroscopy. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

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. This material is easily oxidized and moisture-sensitive; keep the container tightly sealed when not in use. Keep away from strong acids and incompatible materials.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0% (Area %)
Purity (HPLC)	≥ 94.0%
Isomeric Purity ((E)-isomer)	≥ 98.0%
Water Content (KF)	≤ 0.5%

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