*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>MPEG20K Acetaldehyde Y-shape</strong> is a bifunctional polyethylene glycol derivative synthesized via aldehyde-activated end-group modification of linear PEG. The molecular formula is typically C<sub>100+</sub>H<sub>200+</sub>O<sub>50+</sub>, with no single CAS number due to polydispersity.</p>
<h3>Application</h3>
<ul>
<li><strong>Drug Delivery:</strong> Conjugation for long-circulating protein therapeutics and antibody-drug conjugates (ADCs).</li>
<li><strong>Bioconjugation:</strong> Reacting with amine groups on biomolecules to form stable Schiff bases or reductive amination products.</li>
<li><strong>Nanomedicine:</strong> Core component in the self-assembly of micelles for hydrophobic drug solubilization.</li>
</ul>
<h3>Precautions</h3>
<ul>
<li>Store under inert atmosphere at 2-8°C to prevent oxidation and polymer degradation.</li>
<li>Acetaldehyde moiety requires strict handling protocols due to potential toxicity and volatility.</li>
<li>Not approved for direct clinical use; intended solely as an intermediate for pharmaceutical manufacturing.</li>
</ul>