Applications
Sulfonamide antibacterial Sulfanilamide is an antibacterial and used in the treatment of vaginal yeast infections. It is a competitive inhibitor of dihydropteroate synthestase to block the synthesis of folic acid. It serves as an intermediate for the preparation of 2,6-disubstituted anilines by electrophilic substitution followed by removal of the sulfonamide blocking group by desulfonation with sulfuric acid.

Solubility
Soluble in water, acetone, ethanol, glycerol, propylene glycol and hydrochloric acid. Insoluble in chloroform, ether, benzene and petroleum ether.

Notes
Incompatible with strong oxidizing agents.