Description

Isotocin is a synthetic nonapeptide analog of the neurohypophysial hormone oxytocin, specifically recognized by its CAS registry number 550-21-0. This compound is of significant interest in biochemical and pharmacological research for studying the structure-activity relationships of vasopressin/oxytocin family peptides. It serves as a critical tool for researchers and developers in the life sciences sector, particularly those focused on neuroendocrinology, comparative physiology, and the development of novel peptide-based therapeutics.

Application

• Neuroendocrine Research: Used as a reference standard and probe to investigate oxytocin receptor binding, signaling pathways, and physiological effects in various model organisms.
• Comparative Physiology Studies: Essential for studying the evolution and functional diversity of neurohypophysial hormones across different vertebrate species, particularly in fish.
• Peptide Chemistry & Drug Discovery: Serves as a key intermediate or template for the synthesis and structural modification of new peptide analogs with potential therapeutic applications.
• Biochemical Assay Development: Employed in the development and validation of immunoassays (ELISA, RIA) and receptor-binding assays to quantify hormone levels or receptor activity.
• Academic & Pharmaceutical R&D: A fundamental reagent in university and industrial laboratories for basic science and pre-clinical research into social behavior, reproduction, and fluid balance mechanisms.

Basic Information

Product Name	Isotocin
CAS No.	550-21-0
Molecular Formula	C₄₃H₆₆N₁₂O₁₂S₂
Molecular Weight	1007.2 g/mol
Synonyms	4-Serine, 8-Isoleucine-oxytocin; Ichthyotocin; Isotocin acetate; Ile⁸-Oxytocin; [Ile⁸]-Oxytocin; OXT, Ile⁸; Vasotocin, 8-Ile-; 8-Isoleucine-oxytocin
EINECS	Contact for details

Quality Control

Our Isotocin is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity determination, mass spectrometry (MS) for identity confirmation, and amino acid analysis. We provide full traceability and Certificates of Analysis (COA) are available upon request, detailing all critical quality attributes to support your research and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store desiccated at -20°C or below. This product is hygroscopic (moisture-sensitive). Allow the vial to equilibrate to room temperature in a dry environment before opening to minimize moisture uptake.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (HPLC-MS)	Conforms
Purity (HPLC)	≥ 95.0%
Single Impurity (HPLC)	≤ 2.0%
Water Content (KF)	≤ 8.0%
Peptide Content (Amino Acid Analysis)	≥ 80.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.