Description

1-Undecyne is a terminal alkyne with the linear formula CH₃(CH₂)₈C≡CH, serving as a versatile building block in organic synthesis. Its value lies in its ability to participate in click chemistry reactions, such as the copper-catalyzed azide-alkyne cycloaddition (CuAAC), enabling the efficient construction of complex molecular architectures. This high-purity intermediate is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty materials sectors developing novel compounds, polymers, and bio-conjugates.

Application

• Pharmaceutical Intermediates: A key synthon for creating active pharmaceutical ingredients (APIs) via click chemistry and other coupling reactions.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for producing specialty polymers, coatings, and functionalized surfaces.
• Liquid Crystal & OLED Materials: Acts as a precursor in the synthesis of advanced organic electronic materials.
• Organic Synthesis & Catalysis: A fundamental reagent for carbon-carbon bond formation, including Sonogashira and other palladium-catalyzed couplings.
• Bio-conjugation & Probe Development: Enables the labeling of biomolecules (proteins, nucleic acids) for diagnostic and research applications.
• Fragrance & Flavor Chemistry: Used as an intermediate for synthesizing specific musk or aliphatic fragrance compounds.

Basic Information

Product Name	1-Undecyne
CAS No.	2243-98-3
Molecular Formula	C₁₁H₂₀
Molecular Weight	152.28 g/mol
Synonyms	Undecyne; n-Undecyne; 1-Undecyne; Hendec-1-yne; n-Nonylacetylene; 1-Hendecine; Undec-1-yne; Terminal undecyne
EINECS	218-826-7

Quality Control

Our 1-Undecyne is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including GC, GC-MS, and NMR to confirm identity and quantify impurities. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and specific test results is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat, sparks, and open flames. For long-term storage, keeping the container under an inert atmosphere such as nitrogen is recommended to maintain product integrity. Recommended storage temperature is 2-8°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.1%
Density at 20°C	0.760 - 0.770 g/mL
Refractive Index (n20D)	1.428 - 1.432

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