Selective and competitive urotensin-II (UT) receptor antagonist (pKB = 8.3). Blocks hU-II induced contractions in thoracic aorta ex vivo. Exhibits no effect on noradrenaline or endothelin 1-induced contraction or on acetylcholine-induced relaxation. Behaves as a partial agonist in a calcium mobilization assay (in CHO cells expressing hUT receptors).

透明质酸 (HA) 是一种阴离子、非硫酸化糖胺聚糖，广泛分布于结缔组织、上皮组织和神经组织中。它在糖胺聚糖中的独特之处在于它是非硫酸化的，在质膜而不是高尔基体中形成，并且可以非常大，其分子量通常达到数百万。

Kizuta saponin K11 is a saponin derived from Kalopanax pictum var. maximowiczii leaves, which is a widely used Korean medicinal plant.