What type of carbon atom does not generate a signal in the $^{13}$C NMR DEPT-90 spectrum and gives a negative signal in the $^{13}$C NMR DEPT-135 spectrum? O CH$_{2}$ O CH O C O CH$_{3}$
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No signal in DEPT-90 spectrum. 2. Negative signal in DEPT-135 spectrum. Show more…
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