quartet and triplet
ethyl group
doublet and septet
isopropyl group
A peak right around ten
Aldehyde
peak after 10
Carboxylic acid
HD 1
Double bond
peaks between 6 - 8
benzene ring
CH3 shifted super downfield
near electronegative atom
9H Singlet
tertbutyle
HD 2
2 double bonds or and alkyne