A 5260 (OTTO) Albumin from human serum lyophilized powder, essentially protease free, ≥96% (agarose gel electrophoresis) Cas 70024-90-7 - used in various applications related to molecular biology, notably as an inert protein stabilizer for stock solutions of enzymes and proteins of interest. In such applications, it is thus important for the HSA to be protease free, to maintain the integrity of the protein or enzyme of interest.