Description

tert-Butyl 3-Methyl-2-Butenoate is a versatile ester intermediate, specifically a tert-butyl ester of a branched unsaturated acid. This compound is valued for its role as a key building block in organic synthesis, offering a protected carboxylic acid functionality that can be selectively deprotected under mild acidic conditions. It is primarily sought after by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for the development of active ingredients and complex molecules.

Application

• Pharmaceutical Intermediate: Serves as a crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly where the tert-butyl ester group is used as a protecting group.
• Agrochemical Synthesis: Employed in the research and production of advanced pesticides, herbicides, and plant growth regulators.
• Fine Chemical Production: Used in the manufacture of flavors, fragrances, and other high-value specialty chemicals.
• Organic Synthesis Research: A valuable reagent in academic and industrial R&D labs for constructing complex molecular architectures, including natural product analogs.
• Polymer Chemistry: Can act as a monomer or co-monomer precursor in the development of specialty polymers with tailored properties.

Basic Information

Product Name	tert-Butyl 3-Methyl-2-Butenoate
CAS No.	22842-54-2
Molecular Formula	C9H16O2
Molecular Weight	156.22 g/mol
Synonyms	3-Methyl-2-butenoic acid tert-butyl ester; tert-Butyl 3,3-dimethylacrylate; 3,3-Dimethylacrylic acid tert-butyl ester; Pivalic acid tert-butyl ester (related); t-Butyl β,β-dimethylacrylate; 22842-54-2; (E)-tert-Butyl 3-methylbut-2-enoate
EINECS	Contact for details

Quality Control

Our tert-Butyl 3-Methyl-2-Butenoate is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC/HPLC for purity and identity confirmation (IR, NMR), to ensure it meets the high standards required for synthetic applications. Certificates of Analysis (COA) documenting all relevant specifications are available upon request 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 incompatible materials such as strong acids and oxidizing agents. Recommended storage temperature is 2-8°C for long-term stability, although the product is typically stable at controlled room temperature for shorter periods. Keep container tightly sealed when not in use to prevent moisture absorption and volatilization.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0% (Area %)
Water Content (KF)	≤ 0.5%
Refractive Index (n20/D)	1.420 - 1.430
Density (g/mL at 20°C)	0.88 - 0.92

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