Wiktionary
sulfisomidine
n. A sulfonamide antibacterial, closely related to sulfadimidine.
Wikipedia
Sulfisomidine
Sulfisomidine ( INN), also known as sulphasomidine ( BAN until 2003), sulfamethin and sulfaisodimidine, is a sulfonamide antibacterial. It is closely related to sulfadimidine.