1. ICH Harmonised Tripartite Guideline Impurities in new drug substances Q3A(R2). https://database.ich.org/sites/default/files/Q3A%28R2%29%20Guideline.pdf (accessed Jul 27 2023).
2. ICH Harmonised Tripartite Guideline Impurities in new drug products Q3B(R2). https://database.ich.org/sites/default/files/Q3B%28R2%29%20Guideline.pdf (accessed Jul 27 2023).
3. Analytical techniques in pharmaceutical analysis: A review
4. ICH Harmonised Tripartite Guideline Specifications. test Procedures and Acceptance Criteria for New Drug Substances and New Drug Products: Chemical Substances Q6A https://database.ich.org/sites/default/files/Q6A%20Guideline.pdf (accessed Jul. 27 2023).
5. HPLC Detectors, Their Types and Use: A Review