Extraction

Extraction designates processes that separate desired compounds from complex mixtures using differences in solubility, partitioning, or binding interactions. In pharmaceutical development, extraction supports isolation of active compounds, purification of intermediates, sample preparation for analytical testing, and removal of impurities. Techniques include liquid-liquid extraction, solid-phase extraction, and affinity-based capture.

The pharmaceutical industry employs extraction across chemical synthesis, natural product isolation, and analytical workflows. Bioanalytical laboratories use extraction to prepare plasma or tissue samples for LC-MS analysis, improving sensitivity and reducing matrix interference. Manufacturing processes incorporate extraction for intermediate purification and impurity control. Method development optimises solvent selection, pH conditions, and phase ratios to maximise recovery and selectivity. Regulatory expectations require demonstrating extraction reproducibility, impurity profiles, and control strategies ensuring consistent product quality. As analytical demands increase and sustainability pressures encourage reduced solvent use, extraction technologies continue advancing.