Research Article

Pseudo-MS3 Approach Using Electrospray Mass Spectrometry (ESI-MS/MS) to Characterize Certain (2E)-2-[3-(1H-Imidazol-1-yl)-1-phenylpropylidene]hydrazinecarboxamide Derivatives

Table 1

Multistage MS data of compounds 3a–h by ESI-MS/MS.

Product ions of protonated compounds 3a–h [M + H]+ (m/z)
3a (334.10)3b (368.30)3c (348.20)3d (442.10)3e (432.10)3f (448.10)3g (426.2)3h (336.10)

Major fragments of
in-source fragmentation
173.10173.10173.10
183.10183.10183.10
214.20214.20
225.10225.10225.10
241.10241.10241.10
250.83250.83250.83
262.10262.10262.10
266.21
268.12
271.10271.10
280.22
300.30
319.10319.10319.10
364.10358.10
374.10
379.92

Product ion77.1077.1077.10
103.10103.10103.10
118.14118.14118.14
121.20121.20
130.12130.12130.12
132.97132.97
147.12147.12147.12
160.20160.20
173.10173.10173.10
177.21177.21
181.20181.20181.20
203.21203.21
214.11214.11
207.98207.98207.98
225.10225.10225.10
239.90
250.83250.83250.83
262.10262.10262.10
329.80
351.21