2-(Hydrazinocarbon­yl)benzene­sulfonamide

In the title compound, C7H9N3O3S, the chiral conformation of the mol­ecule is determined by an intra­molecular N—H⋯O hydrogen bond between the sulfonamide and hydrazino­carbonyl groups, with the former group acting as a donor in hydrogen bonding. The crystal structure is stabilized by inter­molecular N—H⋯O and N—H⋯N hydrogen bonds and π–π stacking inter­actions between the benzene rings [the inter­planar distance is 3.755 (3) A].