This product, a recombinant human serum albumin (HSA), is derived from genetically modified rice endosperm cells, produced via gene recombination technology, and purified through a protein purification process. It is supplied as a lyophilized powder. HSA, the most abundant protein in human plasma, serves as a transporter for hormones, lipids, and other substances, regulating plasma pH and maintaining osmotic pressure. This HSA, free from animal-derived components, offers a safer choice for serum-free culture media, exhibiting higher purity and better batch stability compared to fetal bovine serum (FBS), plasma-derived albumin (pHSA), and bovine serum albumin (BSA). Additionally, HSA is widely employed as an excipient, stabilizer, and embedding agent in biopharmaceutical production.