9-Benzyl-6-benzyl­sulfanyl-9H-purin-2-amine

In the title compound, C₁₉H₁₇N₅S, the dihedral angles between the purine ring system (r.m.s. deviation = 0.009 Å) and the S-bound and methyl­ene-bound phenyl rings are 74.67 (8) and 71.28 (7)°, respectively. In the crystal, inversion dimers linked by pairs of N—H...N hydrogen bonds generate R₂²(8) loops. C—H...N inter­actions link the dimers into (100) sheets.