Assertion: vanillin's derivative | /r/HasProperty | analyzed by 1h nmr spectroscopy
Facets:
Source sentences:
text: The chemical structures of vanillin and its derivatives were analyzed by 1H NMR spectroscopy using a Varian spectrometer (Palo Alto, Calif.) at 300 MHz and by FT-IR spectroscopy using a Nicolet 460 FT-IR spectrometer (Madison, Wis.).
text: The chemical structures of vanillin and its derivatives were analyzed by 1H NMR spectroscopy using a Varian spectrometer (Palo Alto, CA) at 300 MHz and by FT-IR spectroscopy using a Nicolet 460 FT-IR spectrometer (Madison, Wl).