Synonyms: Isocyanicacid, 3,3'-dimethyl-4,4'-biphenylylene ester (7CI,8CI);3,3'-Bitolylene-4,4'-diisocyanate;3,3'-Dimethyl-4,4'-biphenylene isocyanate;3,3'-Dimethyl-4,4'-biphenylylene diisocyanate;3,3'-Dimethyl-4,4'-diisocyanatobiphenyl;3,3'-Dimethyl-4,4'-diphenylenediisocyanate;3,3'-Dimethylbiphenyl 4,4'-diisocyanate;4,4'-Diisocyanato-3,3-dimethylbiphenyl;4,4'-Diisocyanato-3,3'-bitolyl;4,4'-Diisocyanato-3,3'-dimethylbiphenyl;Bitolylene diisocyanate;NSC 9599;Nacconate 200;