(4-Sulfanilylphenyl)urea (p-Sulfanilylphenyl)urea 1-[4-(4-Sulfanilyl)phenyl]urea 3569-77-5 4-(N-Sulfanilyl)phenylurea 4-Amino-4'-ureidodiphenyl sulfone Amidapsone NSC28120 Sulfacid Sulfacide Sulfone, p-aminophenyl p-ureidophenyl Urea, (p-sulfanilylphenyl)- Urea, [4-[(4-aminophenyl)sulfonyl]phenyl]- p-Amino-p'-ureidodiphenyl sulfone