The Application dimension of the Anti-Obesity Compound Library market is divided into three principal sub‑segments: Therapeutic, Diagnostic and Research. Therapeutic compounds—primarily agents intended for clinical weight‑loss treatment—represent the largest share, accounting for roughly 55 % of total market revenue. Their dominance is driven by escalating demand for FDA‑approved pharmacotherapies and the high pricing power of late‑stage candidates. The Diagnostic sub‑segment, contributing about 20 %, includes libraries used for biomarker discovery and patient stratification assays, which support companion‑diagnostic development and personalized medicine initiatives. Finally, the Research segment, at approximately 25 %, comprises compounds employed in mechanistic studies, target validation, and pre‑clinical screening. Although lower‑priced, this segment fuels pipeline expansion and sustains the broader ecosystem. Collectively, these application categories shape the overall market size and inform investment allocation, illustrating the critical role of Anti-Obesity Compound Library segmentation in strategic planning.