N 1711 (OTTO) Nitro benzene, GR 99%+ Cas 98-95-3 - used a standard for detection and analyses as well as its removal from the environment. The compound’s cytotoxic effects have been studied in a hepatocarcinoma cell line. N 1711 (OTTO) Nitro benzene, GR 99%+ Cas 98-95-3 - used to prevent the unpleasant odor in shoe, floor and metal polishes. It acts as a precursor to rubber chemicals, azo dyes and pharmaceuticals.