azosulfamide
noun
azo·sul·fa·mide
variants:
or chiefly British azosulphamide \ ˌā-zō-ˈsəl-fə-ˌmīd 
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Medical Definition of azosulfamide
: a dark red crystalline azo compound C18H14N4Na2O10S3 of the sulfa class having antibacterial effect similar to that of sulfanilamide
— called also prontosil soluble