Atosiban acetate (RW22164) is an inhibitor of the hormones oxytocin and vasopressin. It is used as an intravenous medication as a labour repressant (tocolytic) to halt premature labor. Atosiban acetate (RW22164) inhibits the oxytocin-mediated release of inositol trisphosphate from the myometrial cell membrane. As a result, there is reduced release of intracellular, stored calcium from the sarcoplasmic reticulum of myometrial cells, and reduced influx of Ca2+ from the extracellular space through voltage gated channels. In addition, Atosiban acetate (RW22164) suppresses oxytocin-mediated release of PGE and PGF from the decidua. In human pre-term labor, atosiban, at the recommended dosage, antagonizes uterine contractions and induces uterine quiescence. The onset of uterus relaxation following atosiban is rapid, uterine contractions being significantly reduced within 10 minutes to achieve stable uterine quiescence.

Desmopressin acetate (16679-58-6 free base) (DDAVP) is the synthetic analog of the antidiuretic hormone arginine vasopressin. Vasopressin Receptor The antidiuretic properties of desmopressin have led to its use in polyuric conditions including primary nocturnal enuresis, nocturia, and diabetes insipidus. Desmopressin acetate (16679-58-6 free base) works by limiting the amount of water that is eliminated in the urine. Desmopressin acetate (16679-58-6 free base) binds to V2 receptors in renal collecting ducts, increasing water reabsorption. It also stimulates the release of von Willebrand factor from endothelial cells by acting on the V2 receptor.

TASP0390325 is an orally active and high affinity arginine pressin receptor 1B (V1B receptor) antagonist that shows antidepressant and anxiolytic activity in animal studies and blocks V1B receptors in the anterior pituitary gland in vivo.

Conopressin S acetate(111317-90-9 free base) (Con-S acetate) is a natural product isolated from Conus striatus, shows high affinity with vasopressin V1b receptor (AVPR1B), with a Ki of 8.3 nM.

Balovaptan (RG7314) is a highly potent and selective brain-penetrant vasopressin 1a (hV1a) receptor antagonist, with Kis of 1 and 39 nM for human (hV1a) and mouse (mV1a) receptors. It is used for the research of autism.

d[Cha4]-AVP acetate is a potent and selective human vasopressin V1B receptor agonist (Ki values are 1.2, 151, 240 and 750 nM for V1B, V1A, Oxytocin and V2 receptors respectively). Stimulates ACTH and corticosterone secretion and exhibits negligible vasopr

d[Leu4,Lys8]-VP acetate is a selective vasopressin V1b receptor agonist. The Kis for rat, human and mouse V1b receptors are 0.16 nM, 0.52 nM and 0.1.38 nM, respectively. d[Leu4,Lys8]-VP acetate exhibits weak antidiuretic, vasopressor and oxytocic activiti

L-371,257 is a competitive antagonist of oxytocin receptor with pA2 of 8.4 and Ki of 19 nM. L-371,257 shows a Ki of 3.7 nM for vasopressin receptor 1a.