Description

(E)-But-2-Enal is a high-purity, unsaturated aldehyde with the CAS number 15798-64-8. This compound serves as a versatile and critical chemical intermediate in advanced organic synthesis, valued for its reactive carbonyl and alkene functionalities. It is primarily sought after by research institutions and industrial manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for building complex molecular architectures.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs) and complex heterocyclic compounds.
• Agrochemical Synthesis: Used in the production of advanced pesticides, herbicides, and plant growth regulators.
• Flavor and Fragrance Chemistry: Serves as a precursor for synthesizing specific aroma chemicals and flavoring agents.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the development of specialty polymers and resins.
• Organic Synthesis Research: A fundamental reagent in academic and industrial R&D for Diels-Alder reactions, nucleophilic additions, and other carbonyl chemistry.
• Fine Chemical Production: Intermediate in the manufacture of dyes, photographic chemicals, and other high-value fine chemicals.

Basic Information

Product Name	(E)-But-2-Enal
CAS No.	15798-64-8
Molecular Formula	C4H6O
Molecular Weight	70.09 g/mol
Synonyms	trans-2-Butenal; Crotonaldehyde (trans-); (E)-Crotonaldehyde; (E)-2-Butenal; β-Methylacrolein; Propylene aldehyde; 1-Formylpropene; 2-Butenal, (E)-; trans-Crotonic aldehyde
EINECS	Contact for details

Quality Control

Our (E)-But-2-Enal is produced and handled under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including assay by GC/HPLC and identification by FTIR, to ensure it meets exacting purity and consistency standards. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Due to its properties of being easily oxidized and highly volatile, this material should be stored under an inert atmosphere (e.g., nitrogen) in a cool, well-ventilated place. Recommended long-term storage temperature is 2-8°C. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Isomeric Purity ((E)-isomer)	≥ 99.0%
Water Content (KF)	≤ 0.5%

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