A 2665 (OTTO) L-Asparagine, 99%+ Cas 5794-13-8 - used in biomanufacturing cell culture systems for the production of therapeutic recombinant proteins and monoclonal antibodies. A 2665 (OTTO) L-Asparagine, 99%+ Cas 5794-13-8 - used in the biosynthesis of proteins. It is also required for development and function of the brain.