
Product Name: | Atosiban |
CAS: | 90779-69-4 |
MF: | C43H67N11O12S2 |
MW: | 994.19 |
EINECS: | 806-815-5 |
Product Categories: | hormones;Peptide |
Mol File: | 90779-69-4.mol |

Atosiban Acetate is an inhibitor of the hormones oxytocin and vasopressin. It is used intravenously to halt premature labor.
Atosiban is a synthetic peptide oxytocin antagonist. It binds to membrane bound oxytocin receptors on the myometrium and prevents oxytocin-stimulated increases in inositol triphosphate production. This prevents release of stored calcium from the sarcoplasmic reticulum and subsequent opening of voltage gated calcium channels. This shutdown of cytosolic calcium increase prevents contractions of the uterine muscle, reducing the frequency of contractions and inducing uterine quiescence.
Function:
Atosiban was introduced in the UK as an injectable inhibitor of preterm labor, a major cause of infant morbidity and mortality. This peptidic oxytocin analog is an antagonist of the vasopressin V1a receptor and of the oxytocin receptor which is found in dramatically increased concentration in the uterine myometrium of pregnant women near term. It competitively inhibited contractions in the pregnant guinea pig uterus induced by oxytocin and vasopressin. In a multicenter, double-blind, placebo-controlled trial, treatment with atosiban caused pregnancy prolongation for up to 7 days in women with more than 28 weeks of gestation. In a comparative clinical trial, atosiban showed a comparable tocolytic action (uterine relaxant) to ritodrine but the former was significantly better tolerated, especially with regards to maternal cardiovascular side effects. In healthy volunteers, plasma levels of atosiban decreased bi-exponentially with an initial and a terminal half-life of 21 min and 1.7h respectively.
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The pharmaceutical intermediates are mainly applied to anti-cancer, anti-depression, cardiovascular, diabetes and other new medicine. The chemical intermediates mainly refer to heterocyclics and OLED intermediates.Our factory produce new fine chemical materials which are mainly used in water treatment, bactericidal and anti-corrosion, dyes, electronic materials and other industry fields.
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Under rich experiences and excellent international reputation, the company becomes a quite influential enterprise in China's API field. Wuhan Kanal sincerely look forward to establishing long good cooperation with our customers from all over the world.



