The Types segment classifies ACTH (1-39) products into three subtypes: synthetic, recombinant, and natural extract peptides. Synthetic ACTH (1-39), produced via solid‑phase peptide synthesis, dominates the market owing to its high purity, batch‑to‑batch consistency, and scalable manufacturing, contributing approximately 55 % of total sales. Recombinant ACTH (1-39), generated in genetically engineered microbial systems, offers a cost‑effective alternative with comparable bioactivity, capturing about 30 % of the market, particularly in regions with stringent biosimilarity regulations. Natural extract, derived from animal pituitary glands, retains a niche presence (~15 %) due to legacy usage and lower production costs, but faces declining demand because of purity concerns and supply constraints. This internal taxonomy clarifies how each type supports overall market size, with synthetic forms driving premium pricing, recombinant forms expanding accessibility, and natural extracts sustaining legacy contracts within the ACTH (1-39) market taxonomy.