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. 2020 Aug 28;5(36):23351–23357. doi: 10.1021/acsomega.0c03229

Table 5. SRM Transitions and Collision Energies for CN, ATCA, and the ISs.

      quantifier ion
qualifier ion
compounds precursor ion (m/z) polarity m/z CE (V) m/z CE (V)
CN 299 neg 191 25 81 25
secobarbital-d5 (IS) 242 neg 199 12    
ATCA 147 pos 101 –23 59 –30
ATZA (IS) 145 pos 127 –23