Description

3-Butenoic Acid, 2-Methyl-, 1,1-Dimethylethyl Ester is a specialized organic ester building block, also known as tert-Butyl 2-methylbut-3-enoate. This high-purity intermediate is valued for its unique reactivity, offering a protected carboxylic acid group and an alkene functionality for versatile synthetic transformations. It is primarily utilized by research chemists and process development scientists in the pharmaceutical and advanced materials sectors for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for introducing chiral centers and functionalized side chains.
• Agrochemical Synthesis: Used in the research and development of novel herbicides, fungicides, and plant growth regulators.
• Polymer & Material Science: Serves as a monomer or co-monomer precursor for specialty polymers with tailored properties.
• Organic Synthesis & Catalysis: Employed in cross-coupling reactions, cycloadditions, and as a substrate for developing new catalytic methodologies.
• Flavor & Fragrance Chemistry: Acts as an intermediate for synthesizing specific ester-based aroma compounds.
• Academic & Industrial R&D: A valuable reagent for methodological studies and exploring new chemical spaces in process chemistry.

Basic Information

Product Name	3-Butenoic Acid, 2-Methyl-, 1,1-Dimethylethyl Ester
CAS No.	919087-65-3
Molecular Formula	C9H16O2
Molecular Weight	156.22 g/mol
Synonyms	tert-Butyl 2-methylbut-3-enoate; 2-Methyl-3-butenoic acid tert-butyl ester; tert-Butyl 2-methyl-3-butenoate; 1,1-Dimethylethyl 2-methyl-3-butenoate; But-3-enoic acid, 2-methyl-, 1,1-dimethylethyl ester; tert-Butyl 2-methylbutenoate
EINECS	Contact for details

Quality Control

Our 3-Butenoic Acid, 2-Methyl-, 1,1-Dimethylethyl Ester is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including GC/HPLC for purity and identity confirmation (IR, NMR), to ensure it meets the high standards required for research and process chemistry. A detailed Certificate of Analysis (COA) is provided with every shipment, guaranteeing traceability and consistent quality.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Keep away from strong bases and incompatible materials such as strong oxidizing agents. For long-term storage, consider storing under an inert atmosphere.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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