... 3,3'-Dimethyl-4,4'-biphenylene diisocyanate CAS NO.: 91-97-4 Content: 99% min TODI3,3'-Dimethyl-4,4'-biphenylene ... diisocyanateCAS NO.: 91-97-4Specification:Appearance :Under the normal atmospheric temperature is a white ... ': aBigImageSrc } ); } )(); 3,3'-Dimethyl-4,4'-biphenylene diisocyanate;TODI, 91-97-4