Synthetic drug purification is the process of removing impurities and isolating the desired active pharmaceutical ingredient (API) from a mixture of compounds synthesized through chemical reactions. It involves various techniques and methods to achieve a high degree of purity, ensuring the safety, efficacy, and quality of the synthetic drug. The purification process aims to eliminate or reduce impurities such as reaction by-products, residual starting materials, catalysts, and other contaminants that may affect the drug's potency, stability, or cause adverse effects in patients. Purification methods can vary depending on the specific synthetic drug and the impurities present, and may include techniques such as recrystallization, chromatography, distillation, precipitation, and solvent extraction. Analytical techniques are used to assess the purity of the synthetic drug, ensuring it meets regulatory guidelines and quality standards.