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Logic Puzzle #28: Interference from the Solvent

March 29, 2012

Solvent signals that overlap with signals from the unknown can be a hurdle in an elucidation. The energy wasted when misidentifying a signal can make an elucidation attempt wearisome and frustrating to put it mildly.

Several 13C NMR spectra were collected in deuterated chloroform for a set of unknown compounds. Are any non-solvent signals evident in the expanded regions below?

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