3-Mercapto-1,2-propanediol: Properties, Applications in Sperm Cryopreservation, and Toxic Effects
Feb 22,2024
General Description
3-Mercapto-1,2-propanediol, a versatile compound, exhibits valuable physical and physiological properties. Physically, it is a colorless to pale yellow liquid with a mercaptan-like odor, highly soluble in water and alcohol. It serves as a reducing agent and antioxidant, finding applications in biochemical, pharmaceutical, and medical fields. In freezing and shipping sperm, it acts as a cryoprotectant, safeguarding sperm cells during processes like cryopreservation and transportation. However, caution is advised due to its toxic effects if swallowed or inhaled, causing acute toxicity and potential skin, eye, and respiratory irritation. Safety guidelines and regulations should be followed diligently.
Figure 1. 3-Mercapto-1,2-propanediol
Physical and Physiological Properties
3-Mercapto-1,2-propanediol is a chemical compound with important physical and physiological properties. Physically, 3-Mercapto-1,2-propanediol appears as a colorless to pale yellow liquid with a characteristic mercaptan-like odor. It is highly soluble in water and alcohol, and it is known for its reducing properties. 3-Mercapto-1,2-propanediol is stable under normal temperatures and pressures, but it should be stored in a cool, dry place and protected from light to prevent degradation. From a physiological perspective, Monothioglycerol has several notable characteristics. It is commonly used as a reducing agent in various biochemical and pharmaceutical applications. Due to its ability to break disulfide bonds, 3-Mercapto-1,2-propanediol is utilized in protein chemistry and molecular biology for protein denaturation and renaturation processes. Additionally, it acts as an antioxidant, protecting biological systems from oxidative stress. In certain medical formulations, it is used as a stabilizer and an active pharmaceutical ingredient. In summary, 3-Mercapto-1,2-propanediol is a versatile compound with valuable physical and physiological properties. Its solubility, stability, reducing capabilities, and role as an antioxidant make it a valuable component in various industrial, pharmaceutical, and medical applications. 1
Applications in Sperm Cryopreservation
3-Mercapto-1,2-propanediol is a chemical compound that finds extensive applications in the field of reproductive biology, particularly in freezing and shipping sperm. 3-Mercapto-1,2-propanediol acts as a cryoprotectant, which means it helps protect sperm cells during the freezing and thawing process, enhancing their viability and fertility. When freezing sperm, 3-Mercapto-1,2-propanediol is added to the sperm sample before the cryopreservation procedure. It acts by reducing the formation of ice crystals within the sperm cells, preventing damage to the delicate cellular structures. Additionally, MTG helps maintain the integrity of the cell membrane and prevents oxidative stress, which can occur during the freezing process and negatively impact sperm quality. 3-Mercapto-1,2-propanediol also plays a crucial role in sperm shipping. After freezing, the sperm samples are often transported to different locations for artificial insemination or other assisted reproductive techniques. MTG helps protect the sperm cells during transportation by maintaining their viability and preventing damage caused by temperature fluctuations. Furthermore, 3-Mercapto-1,2-propanediol is known for its ability to scavenge reactive oxygen species (ROS), which are harmful molecules that can cause oxidative damage to cells. By neutralizing ROS, MTG helps maintain sperm quality and motility during freezing and shipping, maximizing the chances of successful fertilization. In summary, 3-Mercapto-1,2-propanediol is a valuable compound in the field of reproductive biology. Its applications in freezing and shipping sperm involve its role as a cryoprotectant, protecting sperm cells from damage caused by freezing, thawing, and transportation. Through its cryoprotective and antioxidant properties, 3-Mercapto-1,2-propanediol assists in preserving sperm viability and fertility, contributing to advancements in assisted reproductive technologies and animal breeding programs. 2
Toxic Effects
3-Mercapto-1,2-propanediol is a chemical compound that exhibits various toxic effects. It is considered toxic if swallowed or inhaled, causing acute toxicity through oral ingestion, dermal contact, or inhalation. Animal studies have shown adverse effects such as lacrimation and convulsions at high doses. 3-Mercapto-1,2-propanediol can also cause skin and eye irritation, and may induce allergic skin reactions. Inhalation of this compound may lead to respiratory irritation. In terms of fire hazards, 3-Mercapto-1,2-propanediol has a moderate potential and can react with oxidizing materials. Animal studies indicate that it can cause lacrimation, convulsions, and ataxia. For specific safety guidelines and regulations, refer to official sources like the REACH registration dossier and relevant regulatory agencies. 3
Reference
1. 3-Mercapto-1,2-propanediol. National Center for Biotechnology Information (2024). PubChem Compound Summary for CID 7291.
2. Taft R. Mouse Sperm Cryopreservation Using Cryoprotectant Containing Monothioglycerol (MTG). Cold Spring Harb Protoc. 2017;2017(11):pdb.prot094490.
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