*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Crotonaldehyde, also known as 2-butenal, is a critical <strong>alpha,beta-unsaturated aldehyde</strong> produced via catalytic oxidation of propylene. Its molecular formula is <strong>C4H6O</strong> with CAS number <strong>123-73-9</strong>.</p>
<h3>Application</h3>
<ul>
<li>Synthesis of pyridine derivatives for pharmaceutical intermediates.</li>
<li>Production of sorbic acid and its esters for food preservatives.</li>
<li>Manufacturing of plastics, resins, and synthetic rubber modifiers.</li>
<li>Creation of perfumes and flavoring agents in the fragrance industry.</li>
</ul>
<h3>Precautions</h3>
<p>Strictly store in cool, ventilated areas away from oxidizers. Requires explosion-proof equipment due to high flammability and toxicity risks upon inhalation or skin contact.</p>