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。

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.

合成了非天酸3-(4-噻唑)-D，L-丙酸盐酸盐及三个中间体，其结构分红外光谱、核磁共振、元素分析、熔点等测试手段得到确证。

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

并采用氢核磁共振，红外光谱和紫外吸收光谱等手段进行了表征。

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

利用红外光谱、光电子能谱、差热分析、核磁共振、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了研究。