Description

3,5-Nonadiyn-2-One (9Ci) is a specialized alkyne-containing ketone building block with the CAS registry number 116428-95-6. This compound is valued for its unique conjugated diyne structure, which makes it a versatile intermediate in advanced organic synthesis and materials science research. It is primarily sought by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and specialty polymer industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Serves as a key synthon for the construction of bioactive molecules and potential drug candidates, particularly those requiring rigid, linear frameworks.
• Agrochemical Research: Used in the development of novel active ingredients for crop protection, leveraging its reactive alkynyl groups.
• Material Science Precursor: Acts as a monomer or cross-linking agent in the synthesis of conjugated polymers and advanced organic materials with specific electronic or optical properties.
• Chemical Synthesis Building Block: Employed in click chemistry, Sonogashira couplings, and other catalytic transformations to introduce diyne functionalities.
• Academic & Industrial R&D: Utilized in exploratory chemistry for developing new synthetic methodologies and novel compound libraries.

Basic Information

Product Name	3,5-Nonadiyn-2-One (9Ci)
CAS No.	116428-95-6
Molecular Formula	C₉H₁₀O
Molecular Weight	134.18 g/mol
Synonyms	3,5-Nonadiyn-2-One; 2-Nonanone, 3,5-diyn-; 3,5-Nonadiyne-2-one; 3,5-Nonadiyn-2-on; Nonadiynone
EINECS	Contact for details

Quality Control

Every batch of 3,5-Nonadiyn-2-One (9Ci) is produced and tested under a strict quality management system. We provide comprehensive analytical data to ensure identity, purity, and consistency for your research and development processes. Certificates of Analysis (COA) detailing specifications such as assay (by GC or HPLC), identity confirmation (by IR and/or NMR), and impurity profiles are available for each lot 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. Due to its highly volatile and easily oxidized nature, prolonged exposure to air, heat, or light should be avoided. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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