The spectra are compatible with formation of a (3′)-CH 3 function, and with complete removal of the 1′ and 2′ hydrogens of dihydroneopterin triphosphate. The fast-atom-bombardment/mass spectrometry study of the same product yields a [M + H] + ion at m/z 238 compatible with the ...
All the spectra of Triphala samples were arranged to match their chemical shift buckets and the average and standard deviation of each bucket were determined using MS-Office Excel built-in functions “AVERAGE” and “STDEV.P”. 2D-NMR spectra of TOCSY and HSQC were recorded. Mass spectra were...
6.The structures of new compounds 7 and 8 were identified by 1H NMR, 13C NMR and HRMS spectra.新化合物7,8经核磁共振氢谱、碳谱和高分辨率质谱予以证实。 7.Its stucture was investigated through IR,1H NMR and mass spectrum.用红外光谱、核磁共振氢谱和质谱推测了产物的结构。 8.~1H NMR Investi...
1H-NMR谱 1. Each fraction was analyzed qualitatively by1H-NMR spectra,then the aromatic fraction was characterized using gas chromatograph/mass spectrometer(GC-MS). 通过1H-NMR谱图对各族组分的切割点的准确性进行了定性分析,并用色-质联用对循环油的芳烃组分进行了分析,初步确定了基本组成,为煤液化油的...
On the basis of 1H, 13C, 17O NMR and IR (CO-region) spectroscospic studies of MenCpM(CO)2 (M = Co, Rh; n = 0-5; Me = CH3), common trends and differences in the changes of 1H and 13C chemical shifts have been established for MenCpM(CO)x (x = 2, M = Co, Rh; x =...
The NMR spectra of paramagnetic and diamagnetic complexes of quercetin exhibit lower as well as higher field shifts that show change in geometry during the metal ligand coordination. 展开 关键词: Quercetin Lanthanides Molecular modeling Density functional theory H NMR ...
英语翻译 The 1H and 13C NMR spectra were recorded using a 300MHz Bruker FTNMR Ultra Shields spectrometer.相关知识点: 试题来源: 解析 H和C的核磁共振谱在300 MHZ的布鲁克傅里叶变换Ultra Shields 核磁共振光谱仪上记录下来 FT 是Forier Transform的缩写,傅里叶转换 Ultra Shields 是布鲁克仪器的一种型号 ...
a1H-NMR spectra were measured on a Bruker Avance 300 spectrometer operating at 300 MHz (DMSO-d6 solutions using TMS as internal reference) 1H核磁共振的光谱在经营在300兆赫(DMSO-d6的Bruker Avance 300分光仪被测量了解答使用TMS作为内部参考) [translate] ...
1H NMR spectra 青云英语翻译 请在下面的文本框内输入文字,然后点击开始翻译按钮进行翻译,如果您看不到结果,请重新翻译! 翻译结果1翻译结果2翻译结果3翻译结果4翻译结果5 翻译结果1复制译文编辑译文朗读译文返回顶部 正在翻译,请等待... 翻译结果2复制译文编辑译文朗读译文返回顶部...
CASE via MS: Ranking Structure Candidates by Mass Spectra Two important tasks in computer-aided structure elucidation (CASE) are the generation of candidate structures from a given molecular formula, and the ranki... A Kerber,M Meringer,C Rücker - 《Croatica Chemica Acta》 被引量: 45发表: ...