Oxytocin free acid (9-Deamidooxytocin) 是催产素的类似物，其 9 位的甘氨酸残基被甘氨酸残基取代。Oxytocin 是一种多效性肽类激素，对一般健康、适应、发育、生殖和社会行为有广泛的影响。

Taccalonolide AJ is a microtubule stabilizer; it has excellent and highly persistent antitumor efficacy when administered directly to the tumor, suggesting that the lack of antitumor efficacy seen with systemic administration of AJ is likely due to its short half-life in vivo.

一种合成多肽，对应人免疫球蛋白重链的第 341-344 氨基酸序列，具有刺激吞噬的作用。Palmitoyl Tetrapeptide-3 也具有抗炎、抗衰老作用，可以通过促进乳头真皮弹性纤维生成来减少皮肤皱纹。