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Nuclear magnetic resonance (NMR) spectroscopy is a technique that detects the chemical environment of atomic nuclei by the absorption of radio-frequency electromagnetic radiation when in the ...

2. Experimental Procedure All the chemicals were purchased from SD fine chemicals, Acros. NMR spectra were recorded on standard Bruker 300WB spectrometer with an Avance console at 300 and 75 MHz for 1 ...

Taxotrophises A and B, two new polyphenols from the stems of Taxotrophis ilicifolius.