Chemical ligation is used to create systems with this property that can access the 135 non-Sohncke (“non-ZONE-keh”) groups. Research on this property started with examples that naturally form eutectics and conglomerate into distinct domains. Materials with this property are the inputs for a technique pioneered by Vladimir Prelog’s work with Troger’s base, which often uses supercritical CO2 as a mobile phase. If a reagent is cheap, it is practical to remove this bulk property through kinetic (-5[1])control by partially completing a reaction and discarding the products. (10[1])This property is naturally present (-5[1])in the products of SN1 (10[1])reactions. (10[2])Louis Pasteur (-5[1])used tweezers (10[5])to show that sodium ammonium tartrate has this property, (10[2]-5[3])giving it an ee (10[1])(“E-E”) of zero. For 10 points, name this property of mixtures (10[1])with no optical activity (10[2])due to an even split of opposite chiralities. (10[1])■END■ (10[4])