The structure of the title compound, C7H9N3S, comprises twisted molecules t
hat associate via N-H . . .N and N-H . . .S hydrogen-bonding interactions.
The dihedral angle between the phenyl ring and the five-membered thiosemica
rbazide plane is 67.56 (5)degrees. This structure was previously determined
using data from visual estimation of photographic intensity (measurements
at room temperature, with R = 0.112).