optical purity

The invention relates to a high optical purity toughened copolymer film or coating.

本发明涉及一种光学纯度高的、增韧共聚物膜或涂层.

In the traditional lactic acid production methods, DL-lactic acid can be synthesized by chemosynthesis method, its cost is too high and its raw materials are venomousness; Optical purity lactate can be produced by Enzyme catalysis.

传统的乳酸生产方法中，化学合成法所用原料有剧毒，生产成本高：酶法生产乳酸工艺比较复杂，对生产条件要求较高，因此微生物发酵法生产乳酸成为乳酸生产的主要方法。

Stereochemical Effect in Mass Spectrometry ( 19)── Determination of the Optical Purity of α-Phenylethylamine by Mass Spectrometry

质谱中的立体化学效应（19）&对映异构的α－苯乙胺光学纯度质谱测定

A chromatographic method for determining optical purity of fungicide , N acylalanines was reported.

报道了旋光性N-酰基丙氨酸类杀菌剂光学纯度的色谱分析方法.

The experiments indicate that the use of source materials with high purity, BN effusion cells, and the cryopump in the system play important roles in reducing the threshold current density of the lasers and improving their optical and electrical performance.

实验表明，生长过程中采用高纯度的源材料，氮化硼的泻流盒以及生长系统中的低温泵等对降低器件的阈电流密度，改善激光器的光电性能起到重要作用。

Determination of optical purity of α-phenylethylamine by high performance liquid chromatography with pre-column derivatization

手性试剂柱前衍生化高效液相色谱法测定α-苯乙胺的光学纯度

The optical purity of cis-R ( + )-and cis-S (-)-DCCA was 93.7 % and 81.8 % , respectively.

顺式 -R ( + ) - 和顺式 -S ( - ) - 二氯菊酸光学纯度分别为93.7%、81.8%.