Linoleic acid is an essential fatty acid of most vegetable oils and animal fats, and a prostaglandin precursor.

Arachidonic Acid is an unsaturated, essential fatty acid. It is found in animal and human fat as well as in the liver, brain, and glandular organs, and is a constituent of animal phosphatides. It is formed by the synthesis from dietary linoleic acid and is a precursor in the biosynthesis of prostaglandins, thromboxanes, and leukotrienes.

γ-Cyclodextrin is an endogenous metabolite.

β-环糊精（β-Cyclodextrin），简称β-CD，为白色结晶性粉末，是一种水溶性环状低聚糖，由7个葡萄糖单元通过α-1,4-糖苷键连接而成。具有“内疏水、外亲水”的刚性锥形空腔结构，分子内腔可以与多种疏水性分子形成非共价的包合物，这种包合作用可以增加客体分子在水中的溶解度，提高其稳定性。

Methyl-β-cyclodextrin是一种环状七糖，，易溶于水，形成稳定的水合物。对非极性物质有增溶作用，可以作为疏水性化合物的增溶剂。它还被广泛用作胆固醇消耗试剂，显著减少网格蛋白依赖性内吞作用并阻止细胞迁移体的形成。

羟丙基-β-环糊精（HP-β-CD）是一种无定形物质，具有极高的水溶性。它在药物递送载体领域得到了广泛的应用，并且是环糊精衍生物中研究最为广泛的一种，对于提高药物的溶解度和稳定性具有显著效果。

Cholesterol is the major sterol in mammals, and its importance in fundamental cellular processes is becoming more appreciated.