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Topic: Mass Spectrum of Paracetemol?  (Read 3730 times)

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Offline zilalti

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Mass Spectrum of Paracetemol?
« on: November 03, 2005, 04:48:50 PM »
I am used to reading mass spectrums of elements with giant atomic stuctures e.g. copper and zinc so im finding this quite hard.
   At the moment I am looking at a mass spectrum for paracetemol (4-Hydroxy-(N-ethanoyl-aminobenzene)) which has four main m/z peaks at around 43, 80, 110 and 151.
I know fragmentation will occur but i cannot account for all of them. The peak at 151 can be accounted for the unfragmented molecule and 43 for a C2H3O group but what about the rest. I would have thought the c-c bond would be most easily broken but there is no evidence for any methyl radicals?
Help would be much appreciated

Offline sdekivit

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Re:Mass Spectrum of Paracetemol?
« Reply #1 on: November 04, 2005, 03:49:24 AM »
 the 43 is the loose carboxylgroup and the peak around 80 is probably the benzene.without the estergroup and the carboxylgroup.

the 110 is probably the whole molecule without the carboxylgroup.
« Last Edit: November 04, 2005, 03:51:47 AM by sdekivit »

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