The structure and properties of polyorganosiloxane-acrylate emulsion copolymer were investigated by IR, XPS, DSC, 1H-NMR, WAXD.

利用光谱、光电子能谱、差热分析、核磁共、X射线衍射等方法对聚硅氧烷改性丙烯酸酯共聚物的结构和性能进行。

The pyrazoles ramification containing dithioether is synthesized by one-step method and characterized by H-NMR, IR and UV-Vis spectra.

并采用核磁共，光谱和紫吸收光谱等手段进行表征。

Nonnatural amino acid 3-(4-thiazolyl)-D,L-alanine hydrochloride and its four intermediates were synthesized, their structures were detenmined by IR,NMR,elementary analysis and melting point.

合成非天然氨基酸3-(4-噻唑基)-D，L-丙氨酸盐酸盐以及三个中间体，其结构分别通过光谱、核磁共、元素分析、熔点等测试手段得到确证。

The structure of neostellerin, which was elucidated by NMR, especially 2D NMR analysis, was different from other daphnane type diterpenes isolated from this plant.

其中新狼毒素与其它从该种植物中所分离得到的瑞香烷型二萜类化合物有不同之处。