Description

2,2-Dimethyl-3-pentenoic acid is a branched-chain unsaturated carboxylic acid, serving as a versatile intermediate in advanced organic synthesis. Its unique structure, featuring both a quaternary carbon center and an olefinic bond, makes it a valuable building block for creating complex molecules with tailored properties. This compound is essential for R&D and production in the pharmaceutical and specialty chemical sectors, where it is used to synthesize active ingredients, fragrances, and functional monomers.

Application

• Pharmaceutical Intermediate: A key chiral synthon for the synthesis of active pharmaceutical ingredients (APIs), particularly in the development of anti-inflammatory and antiviral drugs.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where its structure contributes to biological activity and environmental profile.
• Flavor & Fragrance Ingredient: Acts as a precursor for esters and lactones that impart fruity and creamy notes in high-value perfumery and flavor compositions.
• Polymer Chemistry: Functions as a monomer or co-monomer for producing specialty polymers with specific characteristics like low viscosity or enhanced stability.
• Organic Synthesis Reagent: Employed in research laboratories for Michael additions, cyclization reactions, and the construction of complex natural product analogs.
• Liquid Crystal & Electronic Materials: Serves as an intermediate in the synthesis of organic compounds used in display technologies and organic semiconductors.

Basic Information

Product Name	2,2-Dimethyl-3-pentenoic Acid
CAS No.	16642-52-7
Molecular Formula	C7H12O2
Molecular Weight	128.17 g/mol
Synonyms	3-Pentenoic acid, 2,2-dimethyl-; 2,2-Dimethyl-3-pentenoic acid; 2,2-Dimethylpent-3-enoic acid; β,β-Dimethylvinylacetic acid; NSC 163980; 3-Butenoic acid, 3-methyl-; 16642-52-7 (CAS)
EINECS	Contact for details

Quality Control

Our 2,2-Dimethyl-3-pentenoic acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including chromatography (HPLC/GC) and spectroscopy (NMR, IR), to ensure identity, purity, and consistency. We provide detailed Certificates of Analysis (COA) with each shipment, documenting all critical specifications. Our quality commitment supports compliance with cGMP and ISO 9001 standards for reliable integration into your regulated supply chain.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage, consider under an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Refractive Index (20°C)	1.430 - 1.440
Density (20°C)	0.95 - 0.98 g/mL

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