3,3'-Diaminodifenylsulfon [Czech] 3,3'-Diaminodiphenyl sulfone 3,3'-Diaminophenyl sulfone 3,3'-Sulfonylbis(aniline) 3,3'-Sulfonylbisbenzenamine 3,3'-Sulfonyldianiline 3,3'-Sulphonyldianiline 4-13-00-01009 (Beilstein Handbook Reference) 599-61-1 AI3-52564 ANILINE, 3,3'-SULFONYLDI- BRN 2215938 Benzenamine, 3,3'-sulfonylbis- Bis(m-aminophenyl) sulfone EINECS 209-967-5 NSC 20610 Sulfone, bis(3-aminophenyl) Sulfone, bis(m-aminophenyl)