3-13-00-01270 (Beilstein Handbook Reference) 4,4'-Diformamidodiphenyl sulfone 6784-25-4 BRN 2815334 Diformyl dapsone Diformyl diaminodiphenylsulfone Diformyl-4,4'-sulfonyldianiline Diformyldapsone Formamide, N,N'-(sulfonyldi-4,1-phenylene)bis- (9CI) Formanilide, 4',4'''-sulfonylbis- (8CI) Formanilide, 4',4'''-sulfonyldi- Formilone N,N'-Diformyl-p,p'-diaminodiphenylsulfone N-FORMYL-DIAMINOPHENYL SULFONE, D,L- NSC 53674 Sulfone, bis(N-formyl-p-aminophenyl) WR 6798 p,p'-Sulfonylbisformanilide