Description

17-Octadecynoic Acid is a long-chain fatty acid derivative featuring a terminal alkyne group, which provides a highly reactive handle for chemical synthesis. This unique structure makes it a valuable building block for creating specialized polymers, surface modifiers, and bioactive compounds. It is primarily utilized by researchers and manufacturers in the pharmaceutical, advanced materials, and specialty chemical industries for applications requiring precise molecular design and functionalization.

Application

• Pharmaceutical Intermediate: Serves as a key synthon for the development of novel drug candidates, particularly in creating lipid-conjugated molecules for enhanced delivery.
• Polymer Science: Acts as a monomer or cross-linking agent in the synthesis of specialty polyesters, polyamides, and other functional polymers via click chemistry.
• Surface Modification: Used to create self-assembled monolayers (SAMs) on metal or oxide surfaces to alter wettability, corrosion resistance, or biocompatibility.
• Material Science: Employed in the development of liquid crystals, organic semiconductors, and other advanced organic electronic materials.
• Bioconjugation: The alkyne group enables efficient coupling with azide-functionalized biomolecules (proteins, peptides, sugars) for labeling and probe development.
• Lubricant & Fuel Additive Synthesis: A precursor for synthesizing specialized ester-based additives that modify viscosity and performance characteristics.
• Academic & Industrial Research: A fundamental tool in organic chemistry research for studying reaction mechanisms and developing new synthetic methodologies.

Basic Information

Product Name	17-Octadecynoic Acid
CAS No.	34450-18-5
Molecular Formula	C₁₈H₃₂O₂
Molecular Weight	280.45 g/mol
Synonyms	Stearolic Acid; 9-Octadecynoic Acid; 18-Heptadecynoic Acid; Octadec-17-ynoic Acid; (17-Octadecynoic acid); Terminal Alkyne Fatty Acid; C18 Alkyne Acid
EINECS	Contact for details

Quality Control

Our 17-Octadecynoic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with key parameters including assay, melting point, and impurity profile. Our quality commitment ensures the material is suitable for demanding research and industrial synthesis applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizers and bases. For long-term storage, consider an inert atmosphere to minimize potential oxidation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	50 - 54 °C
Loss on Drying	≤ 0.5%

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