Somatostatin, also known as growth hormone-inhibiting hormone, is a naturally-occurring peptide hormone of 14 or 28 amino acid residues that regulates the endocrine system. It is secreted by the D cells of the islets to inhibit the release of insulin and glucagon, and is also generated in the hypothalamus, where it inhibits the release of growth hormone and thyroid-stimulating hormones from the anterior pituitary.Somatostatin is a tetradecapeptide which can suppress the growth hormone (GH) secretion and control the pituitary hormone secretion in human CNS.

戊二酸单甲酯是二元酯（DBE）通过鼻呼吸道和嗅粘膜的代谢产物，体外实验证明DBE的水解主要产生单甲酯（己二酸单甲酯、戊二酸单甲酯和琥珀酸单甲酯）。

Cholecystokinin Octapeptide (1-2) (desulfated) (H-Asp-Tyr-OH) 是一种多肽，能够由多肽筛选发现。多肽筛选是一种主要通过免疫测定法而集合活性多肽的研究工具。多肽筛选可用于蛋白互作、功能分析，抗原表位筛选，特别是活性分子研究和开发领域。