PB-021Purity on request

Fig. · White to off-white lyophilized powder (API); clear, colorless particle-free solution (finished injection formulation)

Assisted Reproduction Research Peptides

Atosiban

C₄₃H₆₇N₁₁O₁₂S₂ · nC₂H₄O₂ (as acetate) · 994.19 g/mol (free base); ~1054.22 g/mol (monoacetate)

Atosiban is a synthetic nonapeptide derived from the oxytocin scaffold through site-specific modifications at positions 1, 2, 4, and 8, functioning as an oxytocin-receptor antagonist. It is studied for uterine-quiescence mechanisms and receptor-selective antagonism within reproductive pharmacology research.

Source documentation lists this compound under two CAS numbers, 90779-69-4 and 90779-69-2; both appear in supplier and reference documentation.

Purity

On request

Quantity

Milligram, gram, or bulk quantities

Documentation

COA, HPLC, MS / LC-MS, SDS

Packaging

Bulk, non-branded, or private label

Request a Quote Request Documentation

Research Use Only · Buyer verification required

Specifications

Technical profile.

Catalog Number

PB-021

CAS Number

90779-69-4

Sequence

Mpa-D-Tyr(Et)-Ile-Thr-Asn-Cys-Pro-Orn-Gly-NH2 (disulfide bridge: Mpa¹–Cys⁶; [Mpa1, D-Tyr(Et)2, Thr4, Orn8]-oxytocin)

Molecular Formula

C₄₃H₆₇N₁₁O₁₂S₂ · nC₂H₄O₂ (as acetate)

Molecular Weight

994.19 g/mol (free base); ~1054.22 g/mol (monoacetate)

Purity (HPLC)

Available specifications confirmed with quotation

Appearance

White to off-white lyophilized powder (API); clear, colorless particle-free solution (finished injection formulation)

Vial Size

Confirmed with quotation

Storage

−20 °C, sealed, desiccated

Reconstitution

Bacteriostatic water

Classification

Research Use Only

Documentation & Quality

What documentation may be available for Atosiban.

Atosiban·PB-021

Certificate of Analysis (COA)

Manufacturing partner or independent summary of identity, purity, and other release testing for a batch.