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quaternary (C)
DEPT-90: no peak
DEPT-135: no peak
methine (CH)
DEPT-90: positive
DEPT-135: positive
methylene (CH2)
DEPT-90: no peak
DEPT-135: negative
methyl (CH3)
DEPT-90: no peak
DEPT-135: positive
(CH3)4)Si
0
R-CH3
8-35
R-CH2-R
15-50

20-60

30-40

terminal alkyne
65-85

terminal alkene
100-150

benzylic carbon
110-170

0-40
C-Br
25-65
C-Cl
35-80
C-N
40-60
C-O
50-80

amides
165-175

esters
165-175

carboxylic acids
175-185

aldehydes
190-200

ketones
205-220