The Application segment of the Dimercaptosuccinic Acid market is divided into four primary sub‑categories: chelation therapy, diagnostic imaging, research & development, and veterinary medicine. Chelation therapy dominates the landscape, accounting for roughly 45 % of total revenue, driven by the compound’s established role in treating lead, mercury, and arsenic poisoning in both acute and chronic settings. Diagnostic imaging contributes about 30 % as DMSA‑labeled radiopharmaceuticals enable high‑resolution SPECT and PET scans for tumor localization, a niche with steady growth due to expanding oncology diagnostics. Research & development represents 15 % of the market, reflecting ongoing clinical trials exploring novel formulations and combination therapies, which sustain a pipeline of future demand. Finally, veterinary medicine holds the remaining 10 %, where DMSA is employed to manage heavy‑metal toxicity in companion and livestock species, a segment that benefits from stricter regulatory oversight of animal health products. Collectively, these application sub‑segments shape the overall Dimercaptosuccinic Acid segmentation and define the market’s revenue distribution.