Description

(E)-9-Undecenoic Acid CAS NO 37973-84-5 is a high-purity, unsaturated fatty acid derivative characterized by its terminal double bond, serving as a versatile chemical intermediate for advanced organic synthesis. Its value lies in providing a reactive site for functionalization, enabling the production of specialized polymers, fragrances, and pharmaceutical precursors. This compound is essential for R&D chemists and manufacturers in the flavors & fragrances, polymer science, and fine chemical industries seeking to build complex molecular architectures.

Application

• Fragrance and Flavor Intermediate: A key building block for synthesizing musks, lactones, and other aroma chemicals due to its ability to undergo cyclization and functional group transformations.
• Polymer Modification: Used to introduce unsaturation and carboxylic acid functionality into polymer backbones, enhancing properties for coatings, adhesives, and specialty resins.
• Pharmaceutical Synthesis: Serves as a chiral synthon or a side chain in the research and development of bioactive molecules and prodrugs.
• Lubricant and Surfactant Additive: The long hydrocarbon chain and acid group contribute to surface-active properties, useful in formulating industrial lubricants and emulsifiers.
• Organic Synthesis Reagent: Employed in cross-coupling reactions, metathesis, and other catalytic processes to create novel organic compounds for material science.
• Agrochemical Intermediates: A precursor for synthesizing plant growth regulators or specialized active ingredients with tailored properties.

Basic Information

Product Name	(E)-9-Undecenoic Acid
CAS No.	37973-84-5
Molecular Formula	C11H20O2
Molecular Weight	184.28 g/mol
Synonyms	(E)-9-Undecenoic Acid; (E)-10-Hendecenoic Acid; trans-9-Undecenoic Acid; 9-Undecenoic Acid, (E)-; (E)-10-Undecenoic Acid; trans-10-Hendecenoic Acid; 9-Undecenoic acid; (E)-10-Undecylenic Acid
EINECS	Contact for details

Quality Control

Our (E)-9-Undecenoic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity assays and identity confirmation, to ensure it meets precise specifications for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

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 area at room temperature (15-25°C). Due to its sensitivity to oxidation, minimize headspace in opened containers and handle under an inert gas blanket for long-term stability.

Specification

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