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Molecular Vibration-Sensing Component in Human Olfaction

Figure 1

NMR spectra of deuterated cyclopentadecanone in CDCl3.

Left: H- cyclopentadecanone. The peaks indicated by asterisks are those of the internal standard, p-anisic acid. Protons can clearly be resolved into 4xA, 4xB and the remainder [20 protons]. Right: Deuterated cyclopentadecanone. The 1H signal is greatly reduced. From the ratio of the integrated 1H signal before and after deuteration we can calculate the yield to be 95% deuteration in the A position and 94% in the B position. The remaining protons are deuterated to 90%. No impurities are seen in the spectra.

Figure 1