Several chemical and physical properties of ASP have been evaluated based on specific optical rotation values and sugar composition.

基于特定的旋光度值和糖成分，已经评估了 ASP 的几种化学和物理性质。

Optical rotation of solutions should be determined within 30 minutes of preparation.

溶液的旋光度应该在溶液配制好30分钟内进行测定。

Unless otherwise directed, measurements of optical rotation are made at 589 nm at 25.

除非另外指出，旋光度的测量在25、589nm的条件下进行。

Conversely, their absolute configuration can be deduced from the optical rotation direction.

反之，由旋光方向可以推断其绝对构型。

Their rotatory direction and optical rotation are determined by the molecular stereostructure.

它们的旋光方向和旋光度大小都是由其分子的立体结构所决定。