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<h3>Overview</h3>
<p><strong>cis-4-Hydroxy-L-proline</strong> (CAS: 5139-76-0, C<sub>5</sub>H<sub>9</sub>NO<sub>3</sub>) is a specialized chiral intermediate synthesized via enzymatic hydroxylation of L-proline. It serves as a critical building block for peptide pharmaceuticals.</p>
<h3>Application</h3>
<ul>
<li>Pharmaceutical synthesis: Key precursor for antiviral and antibiotic peptides.</li>
<li>Research chemicals: Used in metabolic studies and collagen modeling.</li>
<li>Custom API manufacturing: Integrated into complex molecule production lines.</li>
</ul>
<h3>Precautions</h3>
<p>Store under inert atmosphere at 2-8°C to prevent degradation. Handle with appropriate PPE to avoid skin contact; not approved for direct clinical administration without formulation.</p>