In Investigational New Drug CDMO segmentation by application, the market is divided into three primary categories: Clinical Trials, Preclinical Research, and Regulatory Compliance. Clinical Trials dominate, accounting for ~45% of the market, as CDMOs provide specialized services for phase-specific drug development, including dose formulation and stability testing. Preclinical Research, representing ~35%, focuses on early-stage molecule screening and toxicity profiling, driving demand for scalable, cost-effective trial batches. Regulatory Compliance, at ~20%, ensures adherence to FDA/EU guidelines, with CDMOs offering documentation support and quality assurance. This taxonomy underscores the interplay between developmental stages and service priorities, directly influencing the Investigational New Drug CDMO market size through demand volatility across R&D timelines.