*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>Tofacitinib Citrate Impurity 70</strong> is a synthetic reference standard used in pharmaceutical quality control. It serves as a critical marker for identifying degradation pathways during the manufacturing of JAK inhibitors. The molecular formula is C<sub>16</sub>H<sub>25</sub>N<sub>4</sub>O<sub>8</sub>P and CAS No. is typically associated with specific Tofacitinib metabolites, though exact identification requires batch verification.</p>
<h3>Application</h3>
<ul>
<li>Quality assurance testing in API production facilities.</li>
<li>Method validation for HPLC and LC-MS analytical protocols.</li>
<li>Stability-indicating studies to monitor drug product shelf-life.</li>
</ul>
<h3>Precautions</h3>
<p>Store at -20°C in airtight containers away from light. Handle only within certified fume hoods using appropriate PPE due to potential toxicity. Strictly prohibited for clinical use; intended for laboratory research and regulatory compliance analysis only.</p>