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Course Overview

What is this course about?

10 Key Concepts

The 5-Slide Training Presentation

Slide 2 — Concept Simplified

Slide 3 — Case Study

Slide 4 — Practical Application

10-Point Audit / Inspection Checklist

Full Assessment — 5 Multiple-Choice Questions

Question 1

Question 2

Question 3

Question 4

Question 5

Slide 5 — Knowledge Check + Takeaways

Part B — Reflection

Teaching Goals

Welcome to "Implementing Class 2 Residual Solvent Limits and PDE Values," a comprehensive online course designed for pharmaceutical professionals, QA/QC specialists, and regulatory affairs personnel. Navigating the complexities of ICH Q3C(R9) guidelines can be challenging, but mastering Class 2 residual solvent control is essential for ensuring patient safety, product quality, and regulatory compliance.

Welcome to "Implementing Class 2 Residual Solvent Limits and PDE Values," a comprehensive online course designed for pharmaceutical professionals, QA/QC specialists, and regulatory affairs personnel. Navigating the complexities of ICH Q3C(R9) guidelines can be challenging, but mastering Class 2 residual solvent control is essential for ensuring patient safety, product quality, and regulatory compliance. This course demystifies the fundamental concepts, purpose, and scope of Class 2 solvents, providing you with the practical knowledge needed to implement compliant workflows.

Throughout this training, you will explore the physiological and toxicological rationale behind Permitted Daily Exposure (PDE) and learn how to accurately translate PDE (mg/day) into measurable concentration limits (ppm). We will dive deep into regulatory anchors like USP <467> and Ph. Eur. 2.4.24, comparing Option 1 and Option 2 calculation methods. Through real-world case studies, including high-dose product scenarios and the additivity rule, you will gain hands-on experience in setting risk-based specifications.

Whether you are tracking solvents from excipients, evaluating validated analytical methods, or preparing for a regulatory inspection, this course equips you with a robust 10-point audit checklist and actionable QA/QC controls. By the end of this program, you will have the confidence to make defensible, risk-based release decisions and ensure your manufacturing processes align with the latest global standards. Join us to elevate your compliance expertise and safeguard your pharmaceutical products.

127. Implementing Class 2 Residual Solvent Limits and PDE Values

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            <p>Controlling residual solvents is a fundamental imperative in pharmaceutical manufacturing, directly impacting product quality, regulatory compliance, and patient safety. Under the ICH Q3C(R9) guideline, Class 2 solvents require stringent, individualized controls due to their inherent toxicity profiles. Unlike solvents with lower toxicity, Class 2 solvents demand precise calculation and rigorous monitoring to ensure patient exposure remains strictly below the established Permitted Daily Exposure (PDE). This curriculum provides a comprehensive examination of the regulatory anchors governing these solvents, including harmonized compendial methods such as USP &lt;467&gt; and Ph. Eur. 2.4.24. By establishing a clear physiological and toxicological rationale for PDE derivation, the course lays the groundwork for disciplined solvent control and continuous improvement through greener solvent selection.</p>

<p>To bridge the gap between regulatory theory and daily operations, this training delivers actionable workflows tailored for cross-functional pharmaceutical professionals. Participants will explore the mathematical translation of PDE limits (mg/day) into measurable concentration limits (ppm), critically comparing Option 1 and Option 2 calculation methodologies. Through high-dose product case studies and the application of the additivity rule, quality and manufacturing teams will learn to navigate complex carryover scenarios from excipients and intermediates. Furthermore, the course equips analytical, validation, and regulatory staff with a robust 10-point audit checklist and risk-based specification strategies. This ensures that analytical methods maintain appropriate Limits of Quantitation (LOQ) and that all release or escalation decisions withstand rigorous regulatory inspection.</p>
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