S 2710 (OTTO) Sucrose, for molecular biology, 99.5% Cas 57-50-1 - used to prepare density gradients for cell/organelle separation. In addition, sucrose can be used as a supplement in plant, insect, and bacterial culture media. It can also be used in various enzymatic assays. S 2710 (OTTO) Sucrose, for molecular biology, 99.5% Cas 57-50-1 - used in molecular biology for the preparation of density gradients.