ABSTRACT
The molecular ion region of this compound has four peaks at m/z 182, 183, 184, and 185. One might assume that the highest m/z values correspond to the molecular ion (M+) and the usual M + 1. However, we should not overlook that the peak at m/z = 182 is the base peak of the spectrum, and that we find another peak whose relative abundance is 33 separated by two units of m/z. This is the typical pattern of a chlorinated compound since the abundance of the chlorine-35 and chlorine-37 are approximately 76 : 24. The small peaks at m/z = 183 and 185 would be, therefore, the two M + 1 peaks (M + 1 and M + 3, to be precise). Although the peaks at m/z 182 and 184 seem to point out the presence of the chlorine atom in the molecule, there is no peak at m/z = M-35 (147) to confirm this hypothesis.
