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. Author manuscript; available in PMC: 2020 Nov 15.
Published in final edited form as: Rapid Commun Mass Spectrom. 2019 Nov 15;33(21):1635–1642. doi: 10.1002/rcm.8509

Table 1:

Ion transitions used for selected reaction monitoring

Adduct Ion transition
pyr-Val 408.5 → 158.2
408.5 → 630.2a
[13C5]pyr-Val 411.2 → 162.2
THB-Val 417.2 → 176.1
417.2 → 630.2a
[13C5]THB-Val 419.5 → 181.2
a

double charged precursor ion to y6-fragment