Rest ethyl acetate in compound can be found by NMR using specific peaks and chemical shifts.

• Look for the peak at 1.0-1.2 ppm which corresponds to the ethyl group

• Look for the peak at 4.0-4.1 ppm which ...read more

It gives three peaks

1.0-1.5 ppm one singlet for (CH3-CO-) and 0.5-1.3 ppm one triple for (-CH3)at the same range , and one quarterlet in 4.0- 6.0 ppm for (-CH2-CO-)