Melanotan 2 (MT-2) is a synthetic peptide. Special care has to be taken while storing synthetic peptides. There are many types of peptides, and each one is different. Some peptides need to be stored in powder form while some in liquid form. Melanotan 2 usually comes in a lyophilized powder form. When you buy this product from online suppliers, it is best to take it in an ice pack as the product is sensitive to pressure and temperature changes which may happen during transportation.
Once the product is shipped to you, you have to make sure that it is not gone waste. It is considerably costly, and you can use it for research purposes only if it is stored properly.
Certain articles about peptides on academicjournals.org clearly mention how unstable peptides are at room temperature and when exposed to direct heat or sunlight.
They have to be stored at temperatures between 2 and 8 degree Celsius for their amino acid bonds to remain intact. So, the ideal storage place for MT-2 is a refrigerator. Also, check the manufacturer instructions on storage as different peptides come with different instructions.
As already mentioned, MT-2 from online suppliers usually comes in a small vial in powdered form along with bacteriostatic water. It can be stored either in dry form as such or as a solution.
Storing peptide in dry form
This is the best option if you wish to store them for a long term. Keeping the powder in a vial inside the refrigerator away from light can keep it fresh for longer periods.
Storing peptides after mixing them with water
You can also mix the powder with bacteriostatic water and then store them. By this way, they can be stored only for short term. In this case, if long term storage is needed, then the solution require freezing at a further low temperature (as low as -20 degree Celsius)
Frost free freezers usually work in repeated on and off cycles to keep ice from building inside it. This may make the temperature unstable and cause damage to the peptide. It is better to keep the thawing cycle turned off for long term storage of peptides.
Some researchers also pre-load the amounts required for experiments and then store it. The solution does not take so much time to defrost when taken out.
Storage containers for peptides
Containers also play an important role when it comes to storage of peptides. The containers should be strong enough so that they can be easily carried around. They should be clear, translucent and resistant to chemical breakdowns. The size should also be suitable for the amount of peptide stored.
MT-2 usually comes in small glass containers which are ideal for storage as well. Very few researchers make use of plastic containers.
MT-2 can remain fresh for longer periods of time if it is stored properly. Freshness is a must to get accurate results from experiments using it. Experimental results using unstable peptides are not reliable. Read the storage instructions given by the manufacturer carefully and then follow them accordingly.