Their chemical structures were confirmed by means of elemental analysis, infared spectra, proton nuclear magnetic resonance spectra and mass spectra.
利用元素分析、红外光谱、核磁共振氢谱和激光解析电离飞行时间质谱确证了其组成和结构。
The structure of the synthetic product was conformed by gas chromatogram, infrared spectra and proton nuclear magnetic resonance analysis.
对所合成的产品做了气相色谱、 红外光谱和质子核磁共振分析，确定了其化学结构。
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