Serum protein is the most abundant protein in plasma. Each protein molecule can carry seven fatty acid molecules. These fatty acid molecules bind to gaps in the protein, where their carbon-rich tails are buried safely away from surrounding water molecules. Serum proteins can also carry many other molecules that are insoluble in water. Serum proteins, in particular, can carry many drug molecules, such as ibuprofen. Human serum albumin (HSA) is a highly water-soluble globular monomer plasma protein with a relative molecular weight of 67KDa, composed of 585 amino acid residues, one sulfhydryl group and 17 disulfide bonds. In nanoparticle carriers, HSA nanoparticles are characterized by their ability to bind to various drug molecules, stability during storage and in vivo use, non-toxicity and antigenicity, biodegradability, repeatability, amplification of the production process and better control of release characteristics

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.