Answered: Theoretical mass of P-Coumaric acid is…

Theoretical mass of P-Coumaric acid is 164.16, in LCMS analysis it observed 146.9 why this is so? & same issue with other phenolics, Please Answer.?

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter13: Mass Spectrometry

Section: Chapter Questions

Problem 1Q

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UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.

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Theoretical mass of P-Coumaric acid is 164.16, in LCMS analysis it observed 146.9 why this is so? & same issue with other phenolics, Please Answer.?

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