Description

(E)-3-Undecen-1-Yne CAS NO 74744-33-5 is a high-purity, unsaturated aliphatic hydrocarbon featuring both a terminal alkyne and an internal alkene group. This unique bifunctional structure makes it a valuable and versatile building block in advanced organic synthesis and materials science. It is primarily sought after by research 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 in the synthesis of bioactive molecules, including potential drug candidates and fine chemicals.
• Agrochemical Research: Used in the development of novel pesticides, herbicides, and plant growth regulators due to its reactive functional groups.
• Material Science & Polymer Chemistry: Acts as a monomer or cross-linking agent for creating specialty polymers with tailored properties, such as liquid crystals or conductive materials.
• Organic Synthesis Building Block: Employed in coupling reactions (e.g., Sonogashira, Heck) and cycloadditions to construct complex organic frameworks in academic and industrial R&D.
• Fragrance & Flavor Chemistry: Utilized as a precursor for synthesizing specific unsaturated aroma compounds and flavor ingredients.
• Chemical Biology Probes: The alkyne group allows for bioorthogonal labeling (e.g., via click chemistry) in the development of probes for studying biological processes.

Basic Information

Product Name	(E)-3-Undecen-1-Yne
CAS No.	74744-33-5
Molecular Formula	C₁₁H₁₈
Molecular Weight	150.26 g/mol
Synonyms	(E)-3-Undecen-1-yne; trans-3-Undecen-1-yne; 3-Undecen-1-yne, (E)-; Undec-3-en-1-yne; 1-Undecen-3-yne; 3-Undecene-1-yne; Terminal alkyne C11
EINECS	Contact for details

Quality Control

Every batch of (E)-3-Undecen-1-Yne is produced and analyzed under strict quality management protocols to ensure consistency and purity for research and development applications. Our products undergo rigorous quality testing, including chromatographic and spectroscopic analysis, to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C in a cool, dry, and well-ventilated place. Due to its highly volatile and easily oxidized nature, prolonged exposure to air, moisture, or elevated temperatures should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0% (Area %)
Purity (HPLC)	≥ 97.0% (Area %)
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.