Show the fragmentation pattern of heroin(diacetylmorphine) in an MS spectrum?

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Hagar Sabry

cleavage of the acetyl groups, leading to ions corresponding to the morphine structure. Additionally, fragment ions resulting from the loss of water

Jean-François Gal

When you ask for help, you must be more specific. For example, are you asking for the identification of fragment ions at specified m/z for the electron ionization MS at 70 eV?

The MS spectrum is shown in NIST data base for example.

http://webbook.nist.gov/chemistry/

Most ions you cite are in the spectrum but m/z 315 is absent.