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organic compounds
In the title compiound, C9H18N2O3.C2H6OS, the dipeptide molecule exists as a zwitterion and the backbone adopts an extended conformation. The peptide unit is trans and shows slight deviation from planarity [1 = 174.4 (3)°]. The leucyl side chain adopts the t(g+t) conformation. The crystal packing gives rise to channels which are occupied by the disordered DMSO solvent molecules.