*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>J&K 4-Hydroxybenzoic acid (99%) is a high-purity phenolic intermediate synthesized via the Kolbe-Schmitt reaction. The chemical formula is <strong>C7H6O3</strong> with CAS number <strong>99-06-3</strong>.</p>
<h3>Application</h3>
<ul>
<li>Pharmaceutical synthesis: Precursor for paraben preservatives and NSAIDs.</li>
<li>Polymer industry: Monomer for biodegradable polyesters and liquid crystals.</li>
<li>Organic chemistry: Reagent in esterification and protection group strategies.</li>
</ul>
<h3>Precautions</h3>
<p>Store in a cool, dry place under inert atmosphere. Use PPE to prevent skin irritation; avoid inhalation of dust. Not approved for direct clinical use as an active ingredient.</p>