Description

Technical Parameters

Introduction

Oxytocin2

musclepic 8

Products Description

1. Product Classification System

High-quality oxytocin raw material peptides are generally classified into the following categories based on their intended use and purity standards:

1. Pharmaceutical Grade

Pharmaceutical grade oxytocin must meet national or international pharmacopoeia standards, with a purity typically above 98%–99%. Impurities, residual solvents, and microbiological indicators are strictly controlled. This grade is mainly used in the production of injections, nasal sprays, lyophilized powder injections, and other formulations, and represents the highest requirements for raw materials.

2. Research Grade

Research grade oxytocin is mainly used in basic research, animal experiments, and cell experiments, with a purity typically between 95% and 98%. Although its specifications are slightly lower than pharmaceutical grade, its stability, batch consistency, and bioactivity are still highly reliable, making it a commonly used grade by many research institutions.

3. Industrial or Biotechnology Grade

This category is mainly used for technology development, experimental method validation, model peptides in large-scale bioreaction systems, and non-clinical products. The purity is generally between 90% and 95%, with relatively relaxed impurity control, but lower production costs.

2. Physicochemical Properties

As a neuropeptide with a cyclic nonapeptide structure, Oxytocin has well-defined and classic physicochemical characteristics. Its core properties are as follows:

1. Molecular Structure and Formula

Oxytocin is a nonapeptide containing a disulfide bond forming a cyclic structure.

Molecular Formula: C43H66N12O12S2

Molecular Weight: 1007.19 Da The cyclic structure makes it more stable than typical linear peptides.

2. Solubility

Very soluble in water, dilute acidic liquids, and some buffer systems.

Limited solubility in organic solvents such as ethanol and methanol.

The lyophilized powder exhibits the highest stability under light-protected, low-temperature, and dry conditions.

3. Stability

Oxytocin is sensitive to temperature and humidity and usually requires freezing or refrigeration for storage.

In solution, it is easily affected by pH, enzymatic hydrolysis, and oxidation, requiring low temperature and light protection to maintain its activity. 4. Appearance and Color

High-quality oxytocin raw material peptides typically appear as:

Pure white to off-white powder

Fine texture, low hygroscopicity

If it is yellow, gray, or noticeably deliquescent, it may indicate insufficient purity or impaired storage conditions.

3. Core Advantages of the Product

The advantages of high-quality Oxytocin raw material peptides are reflected in the following aspects:

1. High Bioactivity

Oxytocin directly participates in neural regulation and endocrine function in the human body, acting precisely on relevant receptors, thus exhibiting strong bioactivity and a clear effect.

2. Controllable Purity, Adaptable to Multiple Formulation Processes

Thanks to existing mature solid-phase peptide synthesis technology (SPPS), oxytocin can achieve high batch-to-batch consistency and excellent impurity control, suitable for various formulation routes such as lyophilized preparations, injections, and nasal sprays.

3. Low Toxicity and Good Tolerability

Oxytocin is part of the body's natural hormone peptides, with low safety, subcutaneous tolerability, and risk of immune reactions.

4. Small molecular weight, good diffusivity and penetration

Compared to large protein molecules, peptide hormones have stronger tissue penetration capabilities, making them suitable for applications requiring rapid onset of action.

5. Mature structure and well-established research

As a classic neuropeptide, Oxytocin has a well-defined pharmacological mechanism, providing a stable model for drug development and neuroscience research.

4. Production Process and Quality Control

High-quality oxytocin raw material peptides are typically synthesized using solid-phase peptide synthesis (SPPS). The process includes:

1. Synthesis stage

Using Fmoc or Boc protection strategies

Stepwise extension of the peptide chain based on a resin carrier

Precise control of the coupling efficiency of each amino acid step

2. Cyclation and disulfide bond formation

The crucial disulfide bonds in oxytocin must be oxidized under strict control to ensure structural correctness and biological activity.

3. Purification technology

Mainly using:

High-performance liquid chromatography (HPLC)

Preparative reversed-phase chromatography

To ensure the purity of the main peak meets pharmaceutical-grade requirements.

4. Drying and Freeze-Drying Processes

Freeze-drying is used to form a stable powder, maintaining activity and product appearance.

5. Quality Control Indicators

Including but not limited to:

HPLC Main Peak Purity

LC-MS Molecular Weight Confirmation

Moisture and Ash Content

Bacterial Endotoxins

Microbial Limits

Ensuring the safety and reliability of the finished product.

5. Application Areas (Research Perspective)

As an important neuropeptide, Oxytocin has wide applications in scientific research and formulation development:

1. Neuroscience Research

Oxytocin is considered related to social behavior, mood regulation, maternal behavior, and trust mechanisms, making it an important molecular tool in social neuroscience research.

2. Hormone and Endocrine Research

Used to study the hypothalamus, pituitary axis, and hormonal feedback mechanisms.

3. Biologics and Drug Development

Used to develop novel formulations such as sprays and injections.

4. Cell Biology Experiments

Used to explore molecular mechanisms such as receptor pathways and signal transduction.

5. Animal Experiments and Behavioral Studies

Commonly used in experimental models of animal social behavior, mating behavior, and parent-child interaction.

6. Storage and Transportation Conditions

To ensure the stability of oxytocin raw material peptides, the following is generally recommended:

Lyophilized powder: Long-term storage below -20℃, protected from light and moisture.

Solution state: Short-term storage at **2–8℃**.

Avoid repeated freeze-thaw cycles to prevent reduction in activity.

Packaging materials are mostly light-proof brown bottles or special glass bottles for lyophilization.

High-quality packaging usually uses nitrogen-filled sealing to reduce the risk of oxidation.

7. Summary

High-quality peptide Oxytocin, as a classic and important neuropeptide hormone, has raw material powder with high purity, good stability, mature structure, and well-defined biological activity. It is an important basic material in scientific research, formulation development, and biochemical research. Through precise synthetic routes and strict quality control, pharmaceutical-grade oxytocin powder can meet high standards of pharmaceutical and scientific requirements.