Ascr#7 是一种由秀丽隐杆线虫 (Caenorhabditis elegans) 分泌的小分子糖脂类信息素，属于蛔甙 (Ascarosides) 家族。此类化合物通常被称为“耐受期信息素 (Dauer pheromones)”，是线虫调节发育、社会行为和应激反应的关键化学信号。Ascr#7 的表达受饮食和发育阶段的强烈调节，其主要生物学功能是诱导长寿命且具有高度应激抗性的“耐受期幼虫 (Dauer larvae)”形成。这种机制允许线虫在环境恶劣（如食物匮乏或高群体密度）时暂停正常发育，进入一种特殊的静止生存状态。

A-Pentasaccharide 是一种尿液中的寡糖，具有抑制抗 A 抗体与 A 型血物质结合的功能。

Chitotetraose tetrahydrochloride is a short-chain chitin oligomer derived from arbuscular mycorrhizal (AM) fungi. This compound effectively activates the conserved symbiosis signaling pathway (CSSP) in actinorhizal plant species.

Allolactose is a disaccharide used as an inducer of the lac operon in Escherichia coli and many other enteric bacteria.

L-Diguluronic acid, a linear polysaccharide copolymer consisting of two L-guluronic acid (G) units, serves as a precursor for Alginate[1], a categorically unbranched polyanionic polysaccharide. Alginate finds application in the development of antifungal agent delivery carriers[2].

Epilactose 是一种二糖，由半乳糖和甘露糖组成，具有益生元特性。它能显著刺激丁酸产生菌的生长，提升丁酸产量，对人类健康具有潜在的功能作用。