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product ion.
The product ion mass spectrum for yakuchinone A shows the formation of characteristic product ion at m/z 137.0.
The resulting product ion is further decarboxylated (−44 Da) to give another unique product ion at m/z 111 [IA–H–2H2O–CO2]− (Scheme 2b).
The product ion spectra of LND and IS were shown in Figure 2. Figure 2 The product ion spectra of lenalidomide [A] and carbamazepine (IS) [B].
The precursor was set to 5 ppm and product ion search tolerance to 200 ppm.
Product ion spectra of LS, IS, and LHA are shown in Fig.
Again, comparing theoretical and experimental isotope patterns shed light on the correct product ion formula.
Figure 2 Product ion mass spectra (full scan) of stanozolol and 3 ′ -hydroxystanozolol.
The first pathway involves loss of formaldehyde (product ion 418 m/z).
Another drawback to the IT is the low mass cut-off in product ion scans.
Detailed product ion spectra can be obtained from one stage MS2 scan using the QQQ.
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