Description

(E)-2-Butenoic Acid Isobutyl Ester is a high-purity ester derivative of 2-butenoic acid, valued for its role as a versatile chemical intermediate and flavor/fragrance component. This compound matters for its ability to impart specific organoleptic notes and participate in controlled synthetic reactions, offering reliability and consistency for industrial formulations. It is needed by manufacturers in the flavor & fragrance, pharmaceutical, and specialty chemical synthesis industries seeking a defined, high-quality building block.

Application

• Flavor and Fragrance Ingredient: Used as a synthetic flavoring agent or fragrance component to impart fruity, buttery, or creamy notes in food products, beverages, and perfumery.
• Chemical Synthesis Intermediate: Serves as a key building block in organic synthesis, particularly for the production of more complex esters, lactones, and other fine chemicals.
• Pharmaceutical Intermediates: Employed in the research and development of active pharmaceutical ingredients (APIs) and other drug substances.
• Polymer Modification: Can be used as a monomer or co-monomer in the synthesis of specialty polymers and resins to modify properties.
• Solvent and Carrier: Functions as a solvent or carrier fluid in specific industrial applications requiring an organic ester.
• Agrochemical Formulations: Utilized as an intermediate or additive in the synthesis of certain pesticides and herbicides.

Basic Information

Product Name	(E)-2-Butenoic Acid Isobutyl Ester
CAS No.	73545-15-0
Molecular Formula	C8H14O2
Molecular Weight	142.20 g/mol
Synonyms	trans-2-Butenoic Acid Isobutyl Ester; (E)-Isobutyl Crotonate; Isobutyl (E)-2-Butenoate; trans-Crotonic Acid Isobutyl Ester; Isobutyl trans-Crotonate; 2-Butenoic Acid, (E)-, Isobutyl Ester; FEMA 3432; Crotonic Acid Isobutyl Ester (trans-)
EINECS	Contact for details

Quality Control

Our (E)-2-Butenoic Acid Isobutyl Ester is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and composition. Certificates of Analysis (COA) documenting results for key parameters such as assay, isomeric purity, and impurity profiles are available upon request. We adhere to relevant industry standards for flavor/fragrance and fine chemical ingredients.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from strong acids, bases, and oxidizing agents. 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
Assay (GC)	≥ 98.0%
(E)-Isomer Purity (GC)	≥ 99.0%
Refractive Index (20°C)	1.422 - 1.426
Specific Gravity (20/20°C)	0.880 - 0.890
Water Content (KF)	≤ 0.1%

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