separated and quantified from the active pharmaceutical ingredient (API).

2. Scope

This SOP applies to all APIs and drug products undergoing method development and validation within the Analytical Method Development (AMD) department. It includes stress conditions, sample preparation, analysis, and documentation of results.

3. Responsibilities

• Analytical Scientist: Plans and performs the forced degradation studies as per protocol.
• Method Development Supervisor: Reviews protocols and ensures proper execution.
• Quality Assurance (QA): Reviews and approves the study report and associated documentation.
• Documentation Coordinator: Archives final reports and data.

4. Accountability

The Head of the Analytical Method Development department is accountable for ensuring that forced degradation studies are conducted as per regulatory expectations (ICH, FDA, EMA) and documented appropriately.

5. Procedure

5.1 Planning and Objective

1. Determine the need for stress testing as part of method development for stability-indicating method validation.
2. Prepare a protocol (Annexure-1) outlining:
   • API or drug product details
   • Stress conditions to be tested
   • Concentration and solvent system
   • Time points and storage conditions

5.2 Stress Conditions

Apply the following stress conditions as per ICH Q1A(R2):

• Acidic Hydrolysis: Treat sample with 0.1N HCl at 60°C for up to 2 hours.
• Basic Hydrolysis: Treat sample with 0.1N NaOH at 60°C for up to 2 hours.
• Oxidative Degradation: Use 3% H₂O₂ at room temperature for up to 2 hours.
• Thermal Stress: Expose sample to 105°C in a dry oven for 24–72 hours.
• Photolytic Degradation: Subject sample to UV and visible light for 1.2 million lux hours and 200 watt-hours/m² respectively.
• Humidity Stress: Store sample at 40°C/75% RH for a minimum of 1 week.

5.3 Sample Preparation

1. Use a known concentration of API/drug product in a suitable solvent (e.g., methanol, water, acetonitrile).
2. Add stress agent to solution and incubate as per condition.
3. Neutralize acidic/basic solutions post-treatment before injecting into the chromatographic system.
4. Filter samples through 0.45 µm filters before injection.

5.4 Instrumental Analysis

1. Use a validated or partially developed chromatographic method (e.g., HPLC, UPLC).
2. Inject stressed samples alongside unstressed control.
3. Assess:
   • Retention time changes
   • Peak purity using PDA or mass spectrometry if applicable
   • Resolution between degradation products and API

5.5 Acceptance Criteria

• API peak should be separated from degradation peaks with resolution ≥ 2.0.
• Purity angle must be less than purity threshold (for PDA).
• Recovery of API should remain within 90–110% for undegraded samples.
• Degradation should be sufficient to produce 5–20% breakdown of API in at least one condition.

5.6 Documentation and Reporting

1. Record:
   • Batch number, chemical grade, and preparation details
   • Exact exposure conditions (duration, temperature, concentration)
   • Chromatograms and peak tables
2. Prepare a forced degradation summary report including conclusion on method specificity and stability-indicating nature.

5.7 Safety and Waste Disposal

• Use PPE and chemical-resistant gloves during acid/base and peroxide handling.
• Dispose of degraded samples and reagents in accordance with SOP on hazardous waste handling.

6. Abbreviations

• API: Active Pharmaceutical Ingredient
• HPLC: High-Performance Liquid Chromatography
• PDA: Photodiode Array
• RH: Relative Humidity
• SOP: Standard Operating Procedure

7. Documents

1. Annexure-1: Forced Degradation Protocol Template
2. Annexure-2: Stress Condition Summary Table
3. Validated Method Draft

8. References

• ICH Q1A(R2) – Stability Testing of New Drug Substances and Products
• ICH Q2(R1) – Validation of Analytical Procedures
• FDA Guidance for Industry – Stability Testing of Drug Substances and Drug Products

9. SOP Version

Version: 2.0

10. Approval Section

	Prepared By	Checked By	Approved By
Signature
Date
Name	Vikram Bansal	Poonam Yadav	Dr. Harshita Goyal
Designation	Research Analyst	QA Officer	Head – AMD
Department	Analytical Method Development	Quality Assurance	Analytical Method Development

11. Annexures

Annexure-1: Forced Degradation Protocol Template

Stress Type	Condition	Duration	Expected Observation
Acid Hydrolysis	0.1N HCl at 60°C	2 hours	Minor degradation
Oxidation	3% H2O2	30 minutes	Significant degradation

Annexure-2: Stress Condition Summary Table

Sample ID	Stress Applied	Peak Purity	API % Assay	Comments
FD-001	Acidic	Pass	92.5%	Stable
FD-002	Oxidative	Fail	78.3%	Degraded

Revision History

Revision Date	Revision No.	Details	Reason	Approved By
01/06/2025	2.0	Aligned with updated ICH guidelines, added Annexure-2	Periodic Review	Dr. Harshita Goyal
01/05/2022	1.0	Initial SOP Issuance	New SOP	QA Head