Figure 2.

IT‐MSⁿ mass spectra of the [180 ⋅ H ⋅ NH₂CONH₂]⁺ ions. A) MS² spectrum of the [180 ⋅ H ⋅  NH₂CONH₂]⁺ ion at m/z=241; B) MS³ of the dehydrated ion [162 ⋅ H ⋅  NH₂CONH₂]⁺ at m/z=223 selected from the ion at m/z=241; C) MS⁴ of the [144 ⋅ H ⋅  NH₂CONH₂]⁺ ion at m/z=205 from the sequential isolation 241→223→205. In red the parent ions.