D 1310 (OTTO) Dextran sulphate sodium salt, for molecular biology Cas 9011-18-1 - used to study colitis (inflammatory bowel disease) as well as an antiviral agent. It functions as a nonsurfactant, suspending agent with gel forming and viscosity controlling properties. D 1310 (OTTO) Dextran sulphate sodium salt, for molecular biology Cas 9011-18-1 - used in gels and moisturizers.