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Regulation of impurities in drug substances and products

Regulation of impurities in drug substances and products

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Q3C, Impurities: Guidel<strong>in</strong>e for<br />

RResidual id l SSolvents, l t Ri Risk k<br />

Assessment for Class 2 Solvents:<br />

xylene<br />

The PDE for xylene is 21.7 mg/day<br />

This implied precision goes far beyond the<br />

precision <strong>of</strong> the science used to calculate<br />

it!<br />

Food <strong>and</strong> Drug Adm<strong>in</strong>istration

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