Determining the formula of an organic compound from mass spec data.

[mimibajiduh]

I am trying to figure out how you can get the formula of a compound when you are given mass spec data. The mass spectra data I have are m/z and the % of base peak. If there is anyone that can guide me in the right direction, that would be awesome :)

 

[chemisttree]

Start http://www.cem.msu.edu/~reusch/VirtualText/Spectrpy/MassSpec/masspec1.htm"