Ethyl<i>N</i>-[4-(3-methyl-4,5-dihydrobenzo[<i>g</i>]indazol-1-yl)phenylsulfonyl]thiocarbamate ethanol monosolvate

The title compound, C(21)H(20)N(3)O(3)S(2)·CH(3)CH(2)OH, comprises two independent organic mol-ecules and two ethanol solvent mol-ecules. The mol-ecules are related by pseudo-mirror symmetry. In both mol-ecules, the N-bound benzene ring is twisted out of the plane of the pyrazole ring [the dihedral angles are 51.4 (3) and 44.1 (3)°, respectively]. Similarly, the benzene ring of the 1,2-dihydro-naphthalene residue is inclined with respect to the five-membered ring [dihedral angles 18.3 (3) and 22.2 (3)°]. Overall, each mol-ecule has a flattened U shape. Dimeric aggregates mediated by O-H⋯N(pyrazole) and amide-N-H⋯O hydrogen bonds feature in the crystal packing, whereby the ethanol mol-ecules link the independent organic mol-ecules, leading to four-mol-ecule aggregates.