the property of a chemical reaction in which the position of the atoms within the molecules (= a unit of a chemical substance made of a group of two or more atoms) involved in the reaction controls the result

Stereospecificity is central to biochemistry, and even small changes in the shapes of molecules can have profound effects. 立体特异性是生物化学的核心，分子形状的微小变化都会产生深远的影响。

There appears to be limited stereospecificity for anti-malarial activity among the acids that we tested.