<chemical> Acetylated sulfone that is slowly metabolised to give long-term, low blood levels of dapsone. It has antimicrobial and antimalarial action, but is mainly used as a depot leprostatic agent. ... Pharmacological action: anti-infective agents, antimalarials, leprostatic agents. ... Chemical name: Acetamide, N,N'-(sulfonyldi-4,1-phenyle...