Multi-step organic synthesis, heterocyclic chemistry, catalyst development, reaction optimization, process scale-up, synthetic methodology development, Column chromatography, preparative TLC, recrystallization, extraction, distillation, purification, sample preparation, HPLC, NMR, FTIR, UV-Visible Spectroscopy, GC-MS, analytical data interpretation, Quality Control (QC), Quality Assurance (QA), GMP compliance, calibration, in-process control, documentation, Project management, scientific writing, literature review, technical reporting, laboratory supervision, researcher training