Description

(E)-2-Methylcrotonic Acid (E)-2-Methyl-2-Butenyl Ester is a specialized organic ester compound with the CAS registry number 72845-40-0. This chemical serves as a valuable intermediate and building block in advanced organic synthesis, prized for its specific stereochemistry and functional group reactivity. It is primarily utilized by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and fragrance sectors for developing novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: A key chiral synthon in the research and development of new active pharmaceutical ingredients (APIs), particularly for stereoselective synthesis.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators where specific isomerism is required for biological activity.
• Flavor and Fragrance Ingredient: Acts as a precursor or a component in the synthesis of complex esters and lactones that contribute to unique olfactory and flavor profiles.
• Organic Synthesis Building Block: Employed in academic and industrial R&D for constructing complex molecular architectures, including natural product synthesis.
• Polymer Modification: Can be used as a functional monomer or cross-linking agent in the synthesis of specialty polymers with tailored properties.
• Chemical Research: Serves as a standard or reagent in methodological studies focusing on esterification, transesterification, and asymmetric catalysis.

Basic Information

Product Name	(E)-2-Methylcrotonic Acid (E)-2-Methyl-2-Butenyl Ester
CAS No.	72845-40-0
Molecular Formula	C10H16O2
Molecular Weight	168.23 g/mol
Synonyms	(E)-2-Methyl-2-butenyl 2-methyl-2-butenoate; (E)-2-Methylbut-2-enyl (E)-2-methylbut-2-enoate; Tiglic Acid Tiglinyl Ester; (E,E)-2-Methylcrotonic Acid 2-Methyl-2-butenyl Ester; 2-Butenoic acid, 2-methyl-, (E)-, 2-methyl-2-buten-1-yl ester, (E)-; (E)-2-Methyl-2-buten-1-yl (E)-2-methyl-2-butenoate; Angelic Acid Angelic Ester (isomer specific); (E,E)-Prenyl Tiglate
EINECS	Contact for details

Quality Control

Our (E)-2-Methylcrotonic Acid (E)-2-Methyl-2-Butenyl Ester is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with detailed specifications, including assay by GC/HPLC, isomeric purity, and impurity profiles. Our quality system supports compliance with cGMP and ISO standards for research and industrial use.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. For long-term storage under inert atmosphere, please contact our technical team for specific recommendations.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 97.0%
(E,E)-Isomeric Purity	≥ 95.0%
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.