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Atosiban CAS NO.90779-69-4

Atosiban (CAS NO. 90779-69-4) is a high-purity, peptide-based therapeutic agent specifically developed for the management of preterm labor. This advanced oxytocin/vasopressin receptor antagonist is supplied as a white to off-white lyophilized powder, with documented molecular structure and verified biological activity. Manufactured under stringent quality control standards, it offers reliable performance in clinical and research settings. Our GMP-certified product ensures consistent purity and efficacy, making it an essential pharmaceutical ingredient for obstetric care and reproductive health applications.

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TECHNICAL SPECIFICATIONS

Item	Specification
Product Name	Atosiban
CAS NO.	90779-69-4
Appearance	White to off-white lyophilized powder
Molecular Formula	C₄₃H₆₇N₁₁O₁₂S₂
Molecular Weight	994.18 g/mol
Purity (RP-HPLC)	≥ 98.0%
Solubility	Soluble in water and acetic acid solution; sparingly soluble in ethanol
Endotoxin	< 1.0 EU/mg
Biological Activity	Oxytocin/vasopressin V1a receptor antagonist; inhibits preterm labor contractions.
Storage Conditions	Store at 2-8°C, protected from light and moisture. After reconstitution, use immediately.
Stock Location	Stock in USA
MOQ	1g

1.MECHANISM OF ACTION

Atosiban functions as a competitive antagonist of oxytocin and vasopressin V1a receptors. By selectively binding to these receptors in uterine tissue, it blocks the action of endogenous oxytocin, preventing the intracellular calcium mobilization that triggers uterine contractions. This receptor-level inhibition effectively suppresses preterm uterine activity without interfering with normal labor processes at term, providing targeted tocolytic action with minimal systemic effects.

2.PRODUCT INDICATIONS

Preterm Labor Management: Primary treatment for inhibiting premature uterine contractions in pregnant women

Obstetric Emergency Care: Acute tocolysis in hospitalized patients with threatened preterm delivery

Reproductive Health Research: Studies of uterine physiology, contraction mechanisms, and preterm birth prevention

Pharmaceutical Development: Active ingredient for tocolytic formulation development and manufacturing

Clinical Protocols: Component of standardized preterm labor management guidelines in obstetric practice

3.CLINICAL EFFICACY OF PRODUCT

Labor Inhibition Success: 85-90% effectiveness in delaying delivery for 48 hours in clinical trials

Gestational Extension: Average prolongation of pregnancy by 7-10 days in treated populations

Neonatal Outcomes: Significant reduction in neonatal morbidity and NICU admissions

Safety Profile: Excellent maternal and fetal safety with minimal cardiovascular effects

Quality Standards: ≥98% HPLC purity with verified biological activity and batch-to-batch consistency

4.DELIVERY & SHIPPING

We specialize in global logistics for various cosmetic peptides. Your order will be handled with the utmost care, ensuring safe, reliable, and intact delivery.
Professional and Secure Packaging
Each bottle of peptide is protected with a special packaging solution to ensure stability and integrity during transportation.
We can also customize packaging according to customer needs.
Shipping Methods
Main Method: International Air Freight

We primarily use DHL, FedEx, UPS, and TNT because of their global reliability, speed, and advanced tracking systems. Air freight ensures the fastest transit time and minimizes the impact of environmental factors on the product.