pharmaceutical secondary standard; traceable to USP, PhEur, BP Synonym(s): 4-Aminophenyl sulfone; 4,4'-Diaminodiphenyl sulfone; 4,4'-Sulfonyldianiline; Bis(4-aminophenyl) sulfone; DDS; Dapsone Empirical Formula: C12H12N2O2S Formula Weight: 248.30 Linear...